Question

1.If a skydiver jumps from a plane and free falls, what is their velocity after 20 seconds?

2.A cat falls from rest from a ledge and lands on the ground .50 seconds later. How fast is the cat moving just before it hits the ground?

3.What is the initial velocity of a ball thrown straight up in the air, that reaches its highest point at 8.8 seconds?

4.A child drops a ball from a window. The ball strikes the ground in 3.0 seconds. What is the velocity of the ball the instant before it hits the ground? Remember the acceleration due to gravity is -9.8 m/s2and if you drop something the initial velocity is 0 m/s.

Answer 1

Answer:

The air resistance would be greater than that for gravity.

(b) The buoyant force will increase because the diver is increasing volume but not weight.