The acceleration of gravity on Earth is approximately 10 m/s² (more precisely,9.8 m/s²).If you drop a rock from a tall building,about how fast will it be falling after 3 seconds?
A)30 m/s.
B)10 m/s.
C)30 m/s²
D)10 m/s²
E)20 m/s

Question

Quizplus · Accepted Answer

The speed of the rock after 3 seconds can be calculated using the formula v = g*t, where g is the acceleration due to gravity (approximately 10 m/s²) and t is the time in seconds. So, after 3 seconds, the speed would be 10 m/s² * 3 s = 30 m/s.

The Acceleration of Gravity on Earth Is Approximately 10 M/s²