Momentum
The units of momentum are this
What is kg*m/s?
Newton's Third Law
What is for every action force there is an equal but opposite reaction force.
What is the unit for impulse?
What is Ns or Newton seconds
Define The Law of Conservation of momentum.
What is the total momentum of a system remains the same before and after a collision?
In a collision this physics quantity is always conserved.
What is momentum?
Momentum is defined as this.
What is the product of mass and velocity, or in other words, inertia in motion?
As an object falls it's moment would do this.
What is increase?
What is the formula for the Impulse-Momentum Theory
What is Ft = m(vf-vi)
This is the reason driving on a rough, gravel road would NOT be a closed system.
What is there is an external force caused by friction?
What is in Elastic collisions, objects bounce and in Inelastic collisions, objects stick together?
A deer with mass of 146 kg is running head-on toward you with a speed of 17m/s. You are going north. Find the momentum of the deer.
What is 2500 kg*m/s south?
A rat could have the same momentum as a slow-moving dog if this was true about the rat's velocity.
What is it was much higher than the dog's?
Two identical cars (same mass) are moving at 20 m/s and must come to rest. Car A slams on their breaks, stopping in a short amount of time. Car B applies the breaks lightly and slows down over a longer period of time. Car A's total change in momentum would be this compared to Car B's.
What is equal?
A man is at rest on a skateboard and jumps off. The man's velocity compared to the skateboard's velocity would be this. (magnitude and direction)
What is the man's velocity would be smaller and in the opposite direction of the skateboard?
These are the two requirements for a closed system.
What are no mass is gained or lost and there are no external forces?
A moving object has a mass of .5 kilograms and a velocity of 1000 m/s. This object has a large amount of momentum because of it's....
What is velocity?
When two objects collide, how do the forces each object experiences compare?
The same amount of force is applied to each.
A force is applied to a shopping cart to get it in motion. If the amount of time that the cart is pushed is increased, the amount of force required would...
What is decrease?
A 4.0 kg bowling ball moving to the right at 8.0m/s has a head on collision with a 6.0 kg bowling ball initially at rest. As you would expect, the balls do not stick to one another, and the first ball moves to the left at 1.5 m/s after the collision. Find the velocity and direction of the second ball after the collision.
What is 6.3 m/s right.
A large ball collides with a small stationary ball. This is what would happen to each ball's momentum.
What is the momentum of the large ball would decrease, and the momentum of the small ball would increase.
Which object has more momentum? A 50 kg object moving at 10m/s or a 2.5 kg object moving at 200m/s
What is their momentum is equal?
Which of the following has the largest momentum?
A small cat walking.
A large dog walking.
A small cat running.
A large dog running.
What is a large dog running?
A 2kg skateboard is at rest on a smooth, flat floor when a girl kicks it, causing it to speed up to 4.5m/s in 0.5s without changing direction. What is the force experienced by the skateboard?
What is 18 N?
A loaded railway car of mass 5000kg is rolling to the right at 2m/s when it collides and sticks to an empty railway car of mass 2000 kg that is at rest. What is their speed and direction of the pair after the collision?
What is 1.43 m/s right.
This is the physics definition of the difference between elastic and inelastic collisions.
What is elastic collisions conserve kinetic energy and inelastic collisions lose kinetic energy?