Question

Suppose that a sled is accelerating at a rate of 2 m/s/s. If the net force is quadrupled and the mass is halved, then what is the new acceleration of the sled? *

Answer 1

The acceleration is

$$a=\frac{F_\text{net}}{m}.$$

The new acceleration is

$$a_n=\frac{4F_\text{net}}{m/2}=8a=16\text{ m/s}^2.$$