Assume no air friction and that the acceleration due to gravity is 10 meters/sec^2. A ball is moving horizontally at a rate of 5 meters/sec. until it falls off the edge of a platform. The height, h, of the platform would have to be ___ meters if the ball hit the ground 8 meters from the foot of the platform.

Question

I don't know how to start. You don't necessarily have to do the whole problem. I just need ideas on how to go about doing the problem! Thanks

Answer 1

the horizontal speed does not change. So, to hit 8m out, it would need to fall for

8m / 5m/s = 1.6 s

So, how far does it fall in 1.6 seconds?