Question

1. A diver does a high dive involving a flip and a half-pike (legs and arms straight, but body bent in half). What can you say about the diver's center of mass?

a) It accelerates with a magnitude of 9.8 m/s2.

b) It must always be roughly located inside the divers body, somewhere in the geometric center.

c) All of these are true statements.

d) It moves in a circular path because of the rotation of the diver.

2. If the net force on an object is zero, then the net torque on the system must also be zero.

a) True

b) False

3. A solid ball and a solid cylinder roll down a ramp. They both start from rest at the same time and from the same position. Which gets to the bottom first?

a) The cylinder.

b) The ball.

c) They get there are the same time.

d) We can't tell without knowing the mass and radius of the objects.

Answer 1

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