Example #1: Inelastic Collisions

Example #2: Inelastic Collisions

Example #3: Inelastic Collisions

Block A with mass 0.050 kg is released from rest at the rim of a frictionless hemispherical bowl that has radius R = 0.600 m. Block A slides down the side of the bowl and strikes block B, which has mass 0.150 kg and that is sitting at rest at the bottom of the bowl, and the two blocks stick together.
What is the speed of the combined object (blocks A and B stuck together) immediately after the collision?

A small light car collides head-on with a large heavy truck. Which of the following statements is correct about what happens as a result of the collision?
A) Both vehicles have the same magnitude of change of momentum.
B) The magnitude of the momentum change for the car is larger than the magnitude of the momentum change for the truck.
C) The magnitude of the momentum change for the car is smaller than the magnitude of the momentum change for the truck.

Blocks A and B are moving on a horizontal frictionless air track. Block A has mass 3.0 kg and block B has mass 6.0 kg. Initially block A is moving to the right at 6.0 m/s and block B is moving to the left at 8.0 m/s. The blocks collide and after the collision block A is moving to the left at 4.0 m/s. What is the velocity of block B after the collision?
A) 3.0 m/s to the left
B) 3.0 m/s o the right
C) 8.6 m/s to the left
D) 8.6 m/s to the right
E) 13.0 m/s to the left
F) 13.0 m/s to the right
G) None of the above answers

An important quantity to know during an inelastic is known as the coefficient of restitution, which essentially measures how "ellastic" a collision is. The coefficient of restitution, e, is defined as
e = ( v1,f - v2,f ) / ( v1,i - v2,i )
where the v's are speeds, not velocities. If a ball were to drop from a height of 5 m, and only bounce up to a height of 4 m, what is the coefficient of restitution for the collision between the ball and the floor?

Blocks A and B are moving toward each other on a horizontal frictionless surface. Block A has mass 5.0 kg and is moving to the right with speed 8.0 m/s. Block B has mass 15.0 kg and is moving to the left with speed 4.0 m/s. The two blocks collide and stick together. After the collision, the combined object (mass 20.0 kg) has velocity A) 0.50 m/s to the left B) 0.50 m/s to the right C) 1.0 m/s to the left D) 1.0 m/s to the right E) 2.5 m/s to the left F) 2.5 m/s to the right G) none of the above answers

Blocks A and B are moving on a horizontal frictionless air track. Block A has mass 4.00 kg and block B has mass 2.00 kg. Initially block A is moving to the right at 6.00 m/s and block B is moving to the left at 9.00 m/s. The blocks collide and after the collision block A is moving to the left at 2.00 m/s. What is the velocity of block B after the collision?A) 1.00 m/s to the leftB) 1.00 m/s to the rightC) 7.00 m/s to the leftD) 7.00 m/s to the rightE) 13.0 m/s to the leftF) 13.0 m/s to the rightG) None of the above answers