The acceleration due to the Earth's gravity, in Imperial units, is 32 ft/s . In the absence of air resistance, a ball is dropped from rest. Its speed on striking the ground is 56 miles/hr. For what time interval was the ball falling? (There are 5280 feet in one mile.) QUESTION 22 A bullet is fired horizontally at a target 16 m away. The velocity of the bullet as it leaves the gun is 111 m/s. How much, approximately, will the bullet drop on its way to the target? Use g=10m/s2. QUESTION 23 A boy runs off a 21 m tall cliff with a horizontal velocity of 2 m/s and falls into a lake. How far from the cliff does he hit the water? Use g=10m/s2