60 Answered Questions for the topic Momentum

4d

Force Applied and Impulse/ Newton's Third Law
How does the applied force of an object determine impulse?How is impulse and Newton's Third Law relate to changes in momentum for colliding objects?
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15d

Physics Question- Momentum and Impulse
A 52 kg girl rides on a 2.6 kg skateboard. The girl on the skateboard moves at 1.3 m/s. If the girl jumps off the skateboard backwards with a velocity of 1.6 m/s, how fast does the skateboard roll... more
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10/29/19

How to find angular momentum from a graph
I have been give a time v torque graph and asked to determine the change in angular momentum. My textbook does not go over this and my professor hasn’t cover this.
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08/02/19

Small car colliding with large truck?
A small car collides with a large truck. Why do both vehicles experience the same magnitude of force? Wouldn't the large vehicle experience less force than the small one?
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08/02/19

Which is easier, pushing or pulling?
It is generally assumed, from a person's perspective, that pushing a cart is more easier than pulling one. But why? Is there any difference in terms of force required to achieve the same amount of... more
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07/17/19

Ball flying towards me or me flying towards ball?
Suppose a ball is flying towards me at a speed of 10m/s and that, on impact, I feel "x" amount of pain. If, instead, it was me flying towards the ball at the same speed, with all other conditions... more
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05/06/19

Why does a billiard ball stop when it hits another billiard ball head on?
(*I'm repeating myself a lot here, but it's because I want to make my confusion clear.*) If 2 billiard balls are the same exact mass, and one hits another stationary one head on, I have heard that... more
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03/04/19

an 80 kg crash test dummy is traveling 35 m/s in a car. stops with a force of 4000N. what was the time it took for the dummy to stop
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02/08/19

How much work must be done on a 5kg skateboard, to increase its speed from 2m/s to 10m/s?
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01/18/19

Physics-High School
A 14kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. Find the momentum change of the rock caused by its fall and the resulting change in the magnitude of... more
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02/21/18

Momentum problem (explosion)
A 0.45 kg fire-cracker is at rest when it explodes into four pieces.   1: 0.15 kg - 15 m/s due east 2: 0.075 kg - 20 m/s due west 3: 0.05 kg - 30 m/s due north 4: 0.175 kg - ?   What is the... more
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02/06/18

Conservation of Momentum
A 0.76 kg fireworks rocket moving at a speed of 32 m/s breaks into two pieces as the result of an explosion. After the explosion a 0.28 kg piece moves with a speed of 42 m/s in the original... more
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01/16/18

what is the momentum of a system of two particles
What is the momentum of a system of two particles with these respective masses and velocities: 3.75 kg moving north at 5.6m/s and 4.2 kg moving northwest at 2.3m/s?
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01/02/18

A tractor of mass 7*10^3 kg is used to tow a car of 4.5*10^2kg,the lorry moved with speed of 5m/s jus before the rope became taut calculate the
Speed of the tractor immediately the rope be comes taut
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12/08/17

Calculate the momentum of each of the following objects:
a) a 0.50 kg ball thrown straight up with a velocity of 30 m/s. b) a 2000 kg railway car moving south at 10 m/s. c) an electron of mass, 9.1 x 10-31 kg moving at a velocity of 1 x 107 m/s. d) the... more
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11/24/17

3. A force of 40N applied at the end of a wire of length 4m and diameter 2mm produces an extension of 0.24mm. Calculate :

3. A force of 40N applied at the end of a wire of length 4m and diameter 2mm produces an extension of 0.24mm. Calculate : (1 mark)i) stress on the wire
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10/25/17

What is final speed
A freight car with a mass of 3.5 x 105 kg traveling at 5 m/s connects itself to another identical freight car at rest. What is their final speed together after the collision
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10/23/17

What is the speed
A 20-gram rubber bullet traveling at 150 m/s hits a stationary 8.5 kg concrete block. If the bullet bounces off of the block in the opposite direction at 100 m/s, what is the final speed of the... more
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10/19/17

momentum and speed
what is the momentum of a 70kg athlete jogging in a straight line on level ground at a speed of 6.0 m/s
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10/18/17

How much force would it take for the batter to hit the ball outward at 160 mph to hit a home run
a baseball  pitcher throw a 145 gram fastball at 90 mph if an average batter is able to make contact with the ball for 0.7 milliseconds
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10/18/17

How much force would it take for the batter to hit the ball outward at 160 mph to hit a home run
a basketball pitcher throw a 145 gram fastball at 90 mph if an average batter is able to make contact with the ball for 0.7 milliseconds 
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10/14/17

How much force
if the cat glove moves back 10 cm while catching the ball how much force did the catcher have to use to stop the ball
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10/14/17

How much force would it take
If an average batter is able to make contact with the ball for 0.7 milliseconds how much force would it take for the batter to hit the ball outward at 106 mph to hit a home run
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10/14/17

how much force would be exerted
If he was not wearing his seatbelt the windshield would stop bobs head in about 0.001 seconds. How much force would be exerted on bobs head
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07/24/17

Dynamics and Forces - Conservation of Momentum
After a 1.30 x 10^2kg astronaut (incl. equipment) connects a safety line (length = 22.0m) to herself and to the spacecraft (mass = 2.80 x 10^3kg), she pushes against the craft and moves away at a... more
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