Question

A body starts from rest and acquires a velocity by spending some energy E what is the velocity acquired by the mass m

Answer 1

1. The body starts from rest so Initial velocity is zero and acquires some velocity V

2. As the body has spent some energy E

3. Whenever the body has velocity the energy spent is kinetic energy and it is given by the formula

K.E = 1/2mv^2, where m is mass of the body and V is the velocity of the body

4. As per the given question body has mass m and spent some energy E so the the velocity acquired will be V = √2E/m

5. Hence the velocity acquired will be √2E/m

Answer 2

Answer:Law of Energy Conservation

Explanation:

E=1/2mv^2

V=(2E/m)^1/2