Question

If a tennis ball has a velocity of 18 m/s and a momentum of 1.06 kg • m/s, what is the mass of the tennis ball in grams?

Answer 1

P=mv
M=p/v=1.06/18= 0.059 kg = 59 g

Answer 2

Answer : The mass of the tennis ball is, 58.8 g

Solution : Given,

Momentum of tennis ball = $1.06Kgm/s$

Velocity of tennis ball = $18m/s$

Momentum : It is equal to the product of the mass of object and the velocity of the object.

Formula used : $p=mv$

where,

p = momentum of an object

m = mass of an object

v = velocity of an object

Now put all the given values in the formula, we get the mass of an object.

$1.06Kgm/s=m\times (18m/s)$

$m=0.0588Kg=58.8g$           (1 Kg = 1000 g)

Therefore, the mass of the tennis ball is, 58.8 g