1. Quiz 1 Period 2

2. In a perfectly elastic collision
all kinetic energy is lost
momentum and mechanical energy are conserved
only momentum is conserved, but not mechanical energy
only energy is conserved, but not momentum

3. Quiz 2 Period 2

4. The ball of a pendulum of mass M is let loose from a height H
The ball of a pendulum of mass M is let loose from a height H. The speed at lowest point is 20cm/s. This same pendulum is taken to planet Magrathea where gravity is 8 times larger. The ball is now let loose from double the height. What is the speed of the ball at the lowest point on Magrathea?
10 cm/s
20 cm/s
40 cm/s
80 cm/s
160 cm/s

5. Quiz 1 Period 3

6. In a perfectly inelastic collision
all kinetic energy is lost, but momentum is conserved
kinetic energy is conserved, but not momentum
some kinetic energy is lost, but momentum is conserved
none of the above

7. Quiz 2 Period 3

8. The ball of a pendulum of mass M is let loose from a height H
The ball of a pendulum of mass M is let loose from a height H. The speed at lowest point is 20cm/s. This same pendulum now taken to planet Magrathea where gravity is 8 times smaller. The ball is now let loose from double the height. What is the speed of the ball at the lowest point on Magrathea?
10 cm/s
20 cm/s
40 cm/s
80 cm/s
160 cm/s