Question

2
- A bullet is fired horizontally and gets embedded
E in a block kept on a table. If table is frictionless,
then
(a) kinetic energy is conserved
(b) momentum is conserved
(c) Both (a) and (b)
(d) None of these​

Answer 1

Answer:

The options Is (b)

Explanation:

This is due to the fact when a bullet hits a wooden block it uses energy to make a hole in it. This energy is reduced from the kinetic energy. Kinetic energy is not conserved. Thus momentum is conserved.

Answer 2

Answer:

The correct answer is Option B : momentum is conserved.

Explanation:

When a bullet hits the table, it will use energy to make a hole in it. This particular energy is reduced from the kinetic energy. We know the kinetic energy is not conserved, hence the momentum is conserved.

Kinetic energy : The energy that a body has as a result of being in motion.

Momentum : A moving body's motion is measured as the product of its mass and velocity.