Question

An object with a mass 4.0 kg has a momentum of 64 kgm/s . How fast is the object traveling ?

Answer 1

Answer:

The object will travel at the speed of 16 m/s.

Explanation:

Given

• Mass m = 4.0 kg

• Momentum p = 64 kgm/s

To determine

How fast is the object traveling?

Important Tip:

The product of the mass and velocity of an object —  momentum.

Using the formula

$p = mv$

where

• m = mass

• v = velcity

• p = momentum

Thus, in order to determine the speed of the object, all we need to do is to substitute p = 64 and m = 4 in the formula

$p = mv$

$64\:=\:4\times v$

switch the equation

$\:4\times \:v\:=64$

divide both sides by 4

$\frac{4v}{4}=\frac{64}{4}$

simplify

$v=16$ m/s

Therefore, the object will travel at the speed of 16 m/s.