Question

Find the momentum
of mass 100g having
a kinetic energy
of 20 J​

Answer 1

Answer:

2 Kg m/s

Explanation:

Mass(m) = 100gm =

$100 \div 1000 = 0.1 \: kg$

Kinetic energy = 20 J

We know that ,

K. E. = 1/2 mv^2

20 J = 1/2 (0.1)v^2

v^2 = (20x2)/0.1

v^2 = 400

v = 20 m/s

Now momentum , p = mv

= (0.1) x 20

= 2 Kg m/s