Question

What is the mass of a stone moving at a speed of
15 meters/second and having a momentum of
7.5 kilogram·meters/second?

a. 0.5 kilograms

b. 1.5 kilograms

c. 11 kilograms

d. 1.1*10² kilograms

Answer 1

p = m*v 7.5 = m*15 m = 7.5/15 = 0.5 kg

Answer 2

Answer: A 0.5kg

Explanation:

Momentum is defined as the product of mass and velocity of a body.

Momentum = mass × velocity

Mass = ?

Momentum = 7.5kgm/s

Velocity = 15m/s

Mass = Momentum/Velocity

Mass = 7.5/15

Mass = 0.5kg