Question

A body of mass 2 kg is projected vertically upwards with a velocity of $2 m \mathrm { sec } ^ { - 1 }$. The K.E. of the body just before striking the ground is

• A. 2 J
• B. 1 J
• C. 4 J
• D. 8 J

Answer 1

Answer: (C)

4 J

Answer 2

If particle is projected vertically upward with velocity of 2m/s then it returns with the same velocity.

So its kinetic energy