3. A cat pushes a 0.25-kg toy with a net force of 8 N. According to Newton's second law, what is the acceleration of the ball?

A. 2 m/s2
B. 4 m/s2
C. 16 m/s2
D. 32 m/s2

Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s