Answers
Answer: Rolling Friction
Explanation:A rolling ball stops because the surface on which it rolls resists its motion. A rolling ball stops because of friction.
Related Questions
A student sits on the roof of their house which is 16 meters high. She can launch water balloons (horizontally) from a slingshot at 26 m/s. How far will each balloon travel (horizontally)?
A. 67.06 m
B. 17.06 m
C. 0.06 m
D. 47.06 m
Answers
Answer:
The horizontal distance traveled by the water balloons is 47.06 m.
D. 47.06 m
Explanation:
Given;
height of the house, h = 16 m
horizontal velocity of the water balloons, v = 26 m/s
The time taken for the water balloons to hit the ground is given by;
[tex]t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2*16}{9.8} }\\\\t = 1.81 \ s[/tex]
The horizontal distance traveled by the water balloons is given by;
x = vt
x = 26 x 1.81
x = 47.06 m
Therefore, the horizontal distance traveled by the water balloons is 47.06 m.
Do you need a reason to live? If you do what is your reason for living?
Answers
Answer: Well that's an easy one. Your mother birthed you but you are still alive today because you choose to continue to push forward and strive to live. As humans we all have struggles but some of choose to strive or sit in our humiliation like a kicked puppy. Pick your option.
A bus accelerates 25 m/s" and the bus has a mass of 150kg. What is the force on the bus?
Answers
Answer:
150 I would believe that it is the correct answer
A circuit consists of a wire, a lightbulb, a switch, and a battery. What would
happen if the switch were replaced with a section of wire?
O A. The voltage and resistance would both decrease.
OB. The voltage would decrease, and the resistance would increase.
O C. The voltage would increase, and the resistance would decrease.
O D. The voltage and resistance would be the same.
Answers
Answer: D
Explanation: I took the test on A P E X
D. The voltage and resistance would be the same.
How a light bulb in a circuit with a battery works?If the light bulbs are connected in parallel, the current flowing through the light bulbs combine to form the current flowing in the battery, while the voltage drop is 6.0 V across each bulb and they all glow.
In a series circuit, every device must function for the circuit to be complete.
Electricity needs a path to follow to get from one destination to another. And the journey is always the same:
Power – Electricity always starts from a source, like a battery or an outlet.
A battery is a device that converts chemical energy contained within its active materials directly into electric energy by means of an electrochemical oxidation-reduction (redox) reaction.
This type of reaction involves the transfer of electrons from one material to another via an electric circuit.
In electronics, a circuit is a complete circular path that electricity flows through. A simple circuit consists of a current source, conductors and a load.
The term circuit can be used in a general sense to refer to any fixed path that electricity, data or a signal can travel through.
Therefore,
If the switch were replaced with a section of wire ,the voltage and resistance would be the same.
Learn more about electric circuit here:
https://brainly.com/question/18355382
#SPJ2
What is the force acting on a 16 kg object accelerating at 2.0 m/s^2
Answers
Answer:
32 N
Explanation: All you gotta do is multipy mass by velocity.
Katie kangaroo takes 0.25hours (15mins) to reach her friends house which is 7.5 miles away how fast was she hopping.
Answers
Answer:
30mph
Explanation:
7.5 miles / .25 hours = 30 mph
What is the magnitude (size) and direction of the cumulative force acting on the car shown in the picture above?
A.
2500 N up
B.
30 N to the right
C.
30 N to the left
D.
2500 N down
Answers
The vertical forces cancel, so only the horizontal forces are included in the net force. If the right is positive and the left is negative, then
50 N + (-20 N) = 30 N
so the net force is (B) 30 N to the right.
Answer:
(B) 30 N to the right.
Explanation:
a tow truck pulls a 2,000-kg car with a force of 4,000 N. what is the acceleration of the car?
A) 0.5 m/s2
B) 2 m/s2
C)200 m/s2
D)2,000 m/s2
Answers
Answer:
B
Explanation:
using f=ma
a=f/m
=4000/2000
=2 m/s2
During a basketball game, a player moves forward 6 meters, backwards 3 meters, and then forward 7 meters over the span of 12 seconds. What is the player's average velocity?
A. 0.83 m/s backward
B. 1.33 m/s backward
C. 0.83 m/s forward
D. 1.33 m/s forward
Answers
Answer:
0.83m/s forward
Explanation:
Velocity is the displacement divided by time.
Velocity = [tex]\frac{displacment}{time}[/tex]
Displacement is the distance moved in a specific direction;
→ 6meters forward
← 3meters backwards
→ 7 meters forward
Net displacement =7m + 3m = 10m forward
So;
Velocity = [tex]\frac{10}{12}[/tex] = 0.83m/s forward
The direction of a moving object will not change if the net force acting on it is
Answers
Answer:
The direction of a moving object will not change if the net force acting on it is zero.
Explanation:
If there is a net force acting on a body, the body may accelerate, slow down, or change direction. In other words, an unbalanced net force may change the state of motion of a body.
The only way a moving object will not change its direction if the body is moving with a constant velocity, meaning all the forces acting on the body are in equilibrium (or balanced). In other words, the net force acting on it is zero, and the speed, as well as direction, would not change.
Therefore, we conclude that the direction of a moving object will not change if the net force acting on it is zero.
If a projectile is launched with no gravity acting on it which of the following is the trajectory?( pls hurry and do not comment if you don’t know )
Answers
Answer:
2nd one,
Its keep going, never return back
Answer:
The straight line.
Explanation:
I did this in an exam.
1. Draw the free body diagram for a parked car
2. Draw the free body diagram for a book being pushed across a smooth desk with no friction
3. Draw the free body diagram for a book being pushed across an old table top with a bumpy surface
Answers
Answer:
can't do it here
Explanation:
can't draw in here sorry dude
yall think aliens real? for me no, because people been trying to search for them through telescopes and stuff for years. but still no sign of them, so they are not real, since there is no evidence, it leads us to the answer, no. we are alone in the universe. but that's only in my opinion...(I might be wrong.)
how about everyone else? how do yall feel about aliens, and us being alone?
Answers
Answer:
Personally I don't believe aliens exist maybe they do who knows but i don't think so.
Explanation:
Colors are comprised of light rays of different what?
Answers
Answer:
Different wavelengths
Explanation:
Can somebody please explain to me about the rock cycle anything would help i have an assignment coming up please and thank you
Answers
explain why competitive athletes do not smoke give as many reasons as you can
Answers
Answer:
Your muscles need oxygen to perform their function, and a reduction in the oxygen making its way to them means that muscles don't work as effectively. ... These negative effects are why most athletes don't smoke.
Explanation:
why do some people suffer for nose bleed at higher altitudes?
Answers
Answer:because of small amount of oxygen
Explanation:
If you get higher by the atmosphere the air will start to decrease
How are electric motors and generators similar? 
Answers
Answer:
they both produce energy
Explanation:
Calculate the wave speed for a wave with a wavelength 2m and frequency of 0.3 Hertz?V
wavelength X frequency
Answers
Answer:
0.6m/s
Explanation:
Given parameters:
Wavelength = 2m
Frequency = 0.3hz
Unknown:
Speed of the wave = ?
Solution:
To find the speed of the wave, we must understand that this parameter depends on the frequency and wavelength of the wave.
So;
V = f∧
F is the frequency
∧ is the wavelength
Now, insert the parameters and solve;
V = 0.3 x 2 = 0.6m/s
Which waves are used in medicine?
______
A. Gamma and Microwaves
B. X rays and Gamma
C. X rays and Infrared
D. Radio waves and UltraViolet
Answers
Answer:
C
Explanation:
a. What is the coefficient of kinetic friction?
Answers
Explanation:
Coefficient of kinetic friction is the resistive force that opposes the motion of a body as it moves and is in contact with another body.
It is found by dividing the frictional force by the normal force.
Friction is a force that opposes motion. Static friction is for bodies that are not in motion Kinetic friction is for moving bodies.HELPPPP LOOK AT THE SCREENSHOT TO ANSWER THE QUESTIONS
17. Which object or objects are traveling at a constant velocity?
1. A
2. B
3. C
4. D
5. E
18. Which object is accelerating?
1. A
2. B
3. C
4. D
19. Which object or objects are sitting still?
1. A
2. B
3. C
4. D
5. E
20. On average, which object is traveling at the fastest velocity?
1. A
2. B
3. C
4. D
5. E
Answers
Explanation:
17. B and D.
18. C.
19. A and E.
20. B
hope it helps. :)
if a tree falls in the woods and nobody is there to hear it, does it really make noise
Answers
Answer: Yes
Explanation: Because, Yes.
help! 20 points
A scientist has two radioactive substances. One emits beta particles, and the other emits alpha particles. He thinks that since the alpha particles are larger, they are more dangerous to humans. Is he correct? Why or why not?
No, because beta particles move faster and can penetrate into the human body more easily.
No, because neither type of particle is dangerous to humans.
Yes, because alpha particles move more slowly, and therefore leave more lasting damage to humans.
Yes, because the larger particles carry more energy and can cause more damage to cells.
Answers
Answer:
No, because beta particles move faster and can penetrate into the human body more easily.
Explanation:
Some beta particles are capable of penetrating the skin and causing damage such as skin burns. However, as with alpha-emitters, beta-emitters are most hazardous when they are inhaled or swallowed.
Answer:
answer is A
Explanation:
A free-body diagram is a special example of the vector diagrams that will
be used throughout our study of physics.
True
or
False
Answers
Suppose a rollerblade racer finnished a 132 meter race in 18 seconds. What is the average speed of the rollerblade racer
Answers
Answer:
As = 7.33 [m/s]
Explanation:
To solve this problem we must use the definition of the average speed, which is equal to the relationship between the distance over time.
As = x/t
where:
As = average speed [m/s]
x = distance = 132 [m]
t = time = 18 [s]
As = 132/18
As = 7.33 [m/s]
Abby is 5 feet tall and casts a 4 foot long shadow of her older brother Ethan is standing next to her and casts a 4.6 shadow how much taller than Abby us Ethan
Answers
Answer:
0.6 ☻︎☻︎☻︎☻︎☻︎☻︎☻︎☻︎☻︎☻︎☻︎
why is area called scalar quantity
Answers
Answer:
Explanation:
Commonly area is a scalar quantity because there is no need of direction to define and also follow the algebrac summation. When we talk about vector there exist a frame of reference with a certain orogin
According to Ohm’s law, which combination of units is the same as the unit for voltage?
ohm ÷ ampere
ampere × ohm
ohm + ampere
ampere ÷ ohm
Answers
Answer:
B: ampere x ohm
Explanation:
Took the test
Answer:
option B
Explanation:
took the test hope this helps :)
Question 4 What is used to change the voltage in electrical lines? ( induction coils Generators Transformers magnets
Answers
Answer:
Transformers
Explanation:
Transformers are things that changer the amount of voltage in an electric line.
