Agolf ball has a mass of 120g. calculate its increase in mass when it is travelling at 40ms1. what is this as a percentage of its rest mass?

%

Explanation:

From special theory of relativity the dynamic mass m is related with the rest mass of the body as

Here, c is the speed of light and v is the velocity of object.

Given mass of the golf ball is 120 g.

Now applying the binomial theorem and solve the above equation.

Therefore, increase in mass is,

Now percentage of increase in mass with rest mass is,

Therefore, the percentage of increase in mass with rest mass is .