At one instant an object in free fall is moving downward at 50 meters per second.One second later its speed should be about
A)25 m/s.
B)50 m/s.
C)55 m/s.
D)60 m/s.
E)100 m/s.

Question

Quizplus · Accepted Answer

When an object is in free fall, its velocity increases at a constant rate of 9.8 m/s^2 (acceleration due to gravity) downward.

So, after one second, the velocity of the object would increase by 9.8 m/s (velocity gained due to gravity).

Therefore, the new velocity of the object after one second would be:

50 m/s + 9.8 m/s = 59.8 m/s ≈ 60 m/s (rounded to the nearest whole number)

Therefore, the best choice is D) 60 m/s.

At One Instant an Object in Free Fall Is Moving