physics
posted by yazan .
a rock hits the ground at a speed of 10m/s and leaves a hole 25cm deep. what is the magnitude of the (assumed) uniform deceleration of the rock?

Vf^2=Vi^2 + 2ad solve for a.

2,000 m/s^2
posted by yazan .
a rock hits the ground at a speed of 10m/s and leaves a hole 25cm deep. what is the magnitude of the (assumed) uniform deceleration of the rock?
Vf^2=Vi^2 + 2ad solve for a.
2,000 m/s^2