It takes a 7N force to cause a 0.028 kg object to begin moving. What is the acceleration of the object as it begins to move? A. 150 m/s2
B. 250 m/s2
C. 0.196 m/s2
D. 0.004 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