For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
100
What is the equation for conservation of momentum?
A 5 kg snowball rolls down a hill at 20m/s. It collides with a pile of leaves that are 0.5 kg. The leaves stick to the snowball and continues to roll. What is the final speed of the snowball and leaves?
18.18 m/s.
200
What is an isolated system?
A system that is free from the influence of a net external force that alters the momentum of the system.
200
What variable is not present in the equation for the conservation of momentum?
A. height
B. mass
C. velocity
A boy throws a 6 kg ball at his friend who weighs 50 kg on a skateboard. The friend who was at rest starts moving after catching the ball at 5m/s. What is the velocity of the ball before the friend catches it?
A 2 kg toy car rolls to the right at 4 m/s on a smooth table top and makes an elastic collision with another 2 kg toy car rolling to the left at 3 m/s. After they collide, the first toy car moves to the left at 2.5 m/s. What is the velocity of the second toy car after the collision?
3.5 m/s.
400
In an ______ system, there is no loss of _______ in the collision.
elastic, kinetic energy
400
The momentum lost by one object ____ the momentum gained by the other object.
A 3500 gram marble rolls away from you at 4.3 m/s. It makes an elastic collision with a 4500 gram marble rolling toward you at 5 m/s. After they hit, the first marble rolls back toward you at 4.7m/s. What is the velocity of the second marble after the collision.
2 m/s.
500
In an _______, kinetic energy is changed to ______________ energy.
inelastic system, some other form of
500
When two objects collide and stick together, momentum is ______ and masses are ________.
A man on a 370 kg surfboard throws a 10kg tube. If the speed at which it is thrown is 6m/s relative to the ocean, and the man and the yacht moves in the opposite direction at 0.15 m/s. What is the man's mass? (Problem is very theoretical).