Question

Pushing over the file cabinet to keep out the

zombies requires 1000 N of force. The cabinet

accelerates at 20 m/s

2

. What is the mass of the

cabinet?

Answer 1

From Newton's second law $F=m \cdot a$

Let's write down

$m=\frac{F}{a}=\frac{1000}{20}=50kg$