Question

A dog is running with a momentum of 5.3 kg ∙ m/s and a velocity of 1.7 m/s. What is its mass?

Answer 1

Given :-

• momentum = 5.3 kg.m/s
• velocity of the dog = 1.7 m/s

To Find :-

• what is its mass ?

Solution :-

we know that,

momentum is product of mass and velocity

$\boxed{ \bold{momentum = mass \times velocity}}$

$\bold{: \implies 5.3 = 1.7 \times m } \\ \\ \bold{: \implies m = \frac{5 \cancel.3}{1 \cancel.7} } \: \: \: \: \: \: \: \: \: \: \\ \\ \bold{: \implies m = \cancel \frac{53}{17} } \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \bold{: \implies m = 3.11 \: kg } \: \: \:$

hence, the mass of the dog is 52/17 or 3.11 kg (approximately)