A frog leaps straight upward into the air. Which of the following is true while the frog is in the air?

The acceleration of the frog is 9.8 m/s^2 upward for the first half of the jump, zero at the top of the jump, and 9.8 m/s^2 downward for the second half of the jump.

The acceleration of the frog is 9.8 m/s^2 upward for the entire jump.

The acceleration of the frog is 9.8 m/s^2 downward for the entire jump.

The acceleration of the frog different at each moment in time during the jump.