Question

A 14-pound bowling ball feels a net force of -4.7 N as it slides down the lane. What is the acceleration of the bowling ball? (1 kg = 2.2 lbs)

Answer 1

According the second Newton's law, the acceleration is:

$$a = \dfrac{F}{m}$$

where $F = -4.7N$ is the net force, and $m = 14lbs = 14/2.2kg$ is the mass. Thus, obtain:

$$a = \dfrac{-4.7\cdot 2.2}{14}\approx -0.74m/s^2$$

Answer. $-0.74m/s^2$.