Quiz 1 Period 2.

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Presentation transcript:

Quiz 1 Period 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

Quiz 2 Period 2

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

Quiz 1 Period 3

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

Quiz 2 Period 3

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