Question

A body is released to fall under the influence of gravity. What would be the instantaneous velocity of the body at the 5th second after release?

A) 45 m/s
B) 49 m/s
C) 55 m/s
D) 50 m/s

Answer 1

The instantaneous velocity of a body falling under the influence of gravity after 5 seconds is b) 49 m/s.

Step-by-step explanation:

The instantaneous velocity of a body falling under the influence of gravity can be calculated using the equation:

velocity = acceleration x time

In this case, the acceleration due to gravity is approximately 9.8 m/s². So, at the 5th second after release, the velocity of the body would be:

velocity = 9.8 m/s² x 5 s = 49 m/s

Therefore, the correct answer is 49 m/s (Option B).