Answer:
the SI unit of momentum is :- kg.ms-1
and we know that,
kinetic energy = 1/2 mv2
E=p2/2m
p=(2Em)1/2
so the derived units are (J.kg)1/2
Explanation:
Can you elaborate more on the question please
Answer:
A. Refer to the figure.
B. The net force acting on the crate is

C. We should first find the acceleration of the crate using the following kinematics equation:

Mass of the crate can be found by Newton’s Second Law:
Mass never just disappears. The other 4kg had to go somewhere. It could have left the scene of the fire in the form of smoke particles and hot gases.