Question

What is the velocity of an object that has a momentum of 4,000 kg-m/s and a mass of 115 kg? Round to the nearest hundredth.

A. 34.78 m/s
B. 36.5 m/s
C. 37.43 m/s
D. 35.67 m/s

Answer 1

Answer: 34.78 m/s

Explanation:

The momentum $p$ is given by the following equation:

$p=m.V$   (1)

Where:

$m$ is the mass of the object

$V$ is the velocity of the object

Finding the velocity from (1):

$V=\frac{p}{m}$   (2)

$V=\frac{4000kg.m/s}{115kg}$  

Finally:

$V=34.78m/s$ >>>This is the velocity of the object

Answer 2

Answer: A.

Explanation:

V = M (kg*m/sec) /m (kg) = 4000/115 = 800/23 = 34.7826.. m/sec