Question

If a force of 20 Newtons causes a skateboard to accelerate at a rate of 10 meters per second per second, which is the mass of the skateboard?

-20 kilograms

-2 kilograms

-10 kilograms

Answer 1

You can use Newton's Second Law:
$F = ma$

To find the mass, simply solve for 'm' and plug in the given values:
$m = \frac{F}{a} = \frac{20}{10} = 2$

Since mass is measured in kilograms, your answer is 2kg. 

Answer 2

Answer:

2 kilograms

Explanation: