Question

1. One truck is heading east at 80 miles per hour. Its mass is 3000kg. A car
(m=1000kg) is heading north at 40 miles per hour. They collide andstick
together. How much energy is lost in the collision? What is thevelocity and
direction of the car/truck?
2. From the shore of a frozen lake, Eli Manning throws a 2 kgfootball at a
velocity of 20 m/s. A person (m = 30kg) standing on the ice (µk =0.02)
catches the ball. What is their velocity immediately after theycatch it? How
far do they slide before they come to a stop?
3. One fires a bullet (m=50g) at a block of wood (m=2kg) resting ona
frictionless surface. The initial velocity of the bullet is400m
s . After passing
through the block, its velocity is 100m
s . What is the velocity of the block?
How much energy is lost?
4. A particle of 8 kg with a velocity of 40m
s hits a 40 kg particle that is at
rest. The collision is elastic. What are the final velocities ofthe particles?
5. A particle of 8 kg with a velocity of 40m
s at0? hits another particle of 25
kg that is moving at a velocity of 70m
s at90?. The collision is elastic. What
are the velocities and directions of the particles after thecollision?