A coin is dropped from a hot-air balloon that is 300 m above the ground and rising at 10.0 m/s upward. For the coin, find (a) the maximum height reached, (b) its position and velocity 4.00 s after being released, and (c) the time before it hits the ground.

Step-by-step solution 57PE Step 1 of 6 (a) Use the equation for the kinematics, Here is the final speed, is the initial speed, is the acceleration. Step 2 of 6 The maximum height y reached by the coin is, Substitute for , for and for . Step 3 of 6 Therefore, Hence, the maximum height reached by the coin is .