Question

A boat's motor pushes with 25 N of force and viscous
friction resists with 5 N. If the boat is 100 kg, find its
acceleration.

Answer 1

Answer:0.2m/s^2

Explanation: newton's first law of motion: F=ma. Fnet=applied force-frictional force. Therefore, Fnet=ma. Make "a" the subject of the formula which will result a=(Fappl-Frict)m.

Therefore a=(25-5)N/100kg

a= 20/100

a= 0.2m/s^2