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...
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.
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?
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...
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...
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...
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...
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...
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
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...
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
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
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
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
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...