Thread: free fall

The equation for free fall at the surface of a planet is with in seconds. Assume a rock is dropped from the top of a 400-m cliff. Find the speed of the rock at =6 sec.

I came up with the answer 45.6 m/sec using the slope of the curve formula, but do not fully understand what I did, or if it is correct. Can anyone explain how to correctly solve?

Thanks!

Originally Posted by live_laugh_luv27

The equation for free fall at the surface of a planet is with in seconds. Assume a rock is dropped from the top of a 400-m cliff. Find the speed of the rock at =6 sec.

I came up with the answer 45.6 m/sec using the slope of the curve formula, but do not fully understand what I did, or if it is correct. Can anyone explain how to correctly solve?

Thanks!

speed,v=

Slope of a curve means the slope of the tangent to curve.