Question

At a particular instant, the magnitude of the momentum of an object is 50 kg*m/s. If the velocity of the object is 10 m/s, what is its mass?

a) 5 kg
b) 500 kg
c) 20 kg
d) 100 kg

Answer 1

By using the momentum formula, the mass of the object is calculated as 5 kg, since momentum of 50 kg·m/s divided by the velocity of 10 m/s gives the mass.

Step-by-step explanation:

To find the mass of an object when its momentum and velocity are known, use the formula for momentum (p): p = m * v, where m is the mass and v is the velocity of the object. The momentum given is 50 kg·m/s, and the velocity is 10 m/s. By rearranging the formula to solve for mass, we get m = p / v. Therefore, the mass m is 50 kg·m/s divided by 10 m/s, which equals 5 kg. Hence, the correct answer is a) 5 kg.