Question

A marble with a mass of 1.5 grams rolls at a constant rate at a constant rate of 0.50 cm/s across a table. What is the magnitude of the marbles's momentum?

Answer 1

Ok so momentum is the product of mass and velocity. Its SI unit is Kg m/s

The marble's velocity is 0.5 cm/s and it's mass is 1.5.

Multiply this -> 0.5 * 1.5 = 0.75 g cm/s

Usually everything in Physics is converted into SI units therefore the SI measurement of the marble is 0.00000075 Kg m/s

Answer 2

Answer:

Momentum, $p=7.5\times 10^{-6}\ kg-m/s$

Explanation:

It is given that,

Mass of the marble, m = 1.5 gm = 0.0015 kg

Speed of the marble, v = 0.5 cm/s = 0.005 m/s

We need to find the momentum of the marble. It can be given by the product of mass and velocity i.e.

$p= m\times v$

$p= 0.0015\ kg\times 0.005\ m/s$

p = 0.0000075 kg-m/s

$p=7.5\times 10^{-6}\ kg-m/s$

So, the marbles's momentum is $7.5\times 10^{-6}\ kg-m/s$. Hence, this is the required solution.