Chapter 4, Problem 72GP

The froghopper, champion leaper of the insect world, can jump straight up at 4.0 m/s. The jump itself lasts a mere 1.0 ms before the insect is clear of the ground.

a. Draw a free-body diagram of this mighty leaper while the jump is taking place.

b. While the jump is taking place, is the force that the ground exerts on the froghopper greater than, less than, or equal to the insect’s weight? Explain.