Question

A ball is dropped from height 10m. Ball is embedded in sand im and stops, then
(a) Only momentum remains conserved
(b) Only kinetic energy remains conserved
(c) Both momentum and kinetic energy are conserved
(d) Neither kinetic energy nor momentum is conserved​

Answer 1

Answer:

when it happens both momentum and kinetic energy conserve because both in rest so we suppose this ia one system then we conserve it

In short answer is C

hope it helps you

please mark as brainlist

Answer 2

If a ball is dropped from a height and then it is embedded in sand and stops then (d) Neither kinetic energy nor momentum is conserved​.

• External forces are the ball weight and the resistance due to sand.  Therefore, momentum is not conserved when there is zero external force.
• Also, the kinetic energy will not remain conserved as the ball will be both under accelerated and then de-accelerated.
• The motion will change the velocity of the ball and thus the kinetic energy will change. It will be zero at the rim, maximum at the sand surface and zero again at 1 m below the sand