Question

The work done by the gravity during descent of the projectile is

• A. Positive
• B. negative
• C. zero
• D. depends upon the sign convention where we used

Answer 1

The correct option is A

Positive

Gravity pulls objects down and the projectile also moves down. Thus, the force and motion of the projectile are in the same direction.

Work done is calculated as,

Work= Force × displacement

Here, displacement is the movement in line with the force of gravity F.

As mentioned earlier, both the force and motion are in the same direction. Hence, the work done by gravity is positive.

Hence, the correct option is A.