Question

A child on a toboggan is pulled across a frictionless surface using a rope which provides a tension force of 42 N [W]. Calculate the combined mass of the child and toboggan if they accelerate at 1.90 m/s2 [W] along the ground.

Answer 1

$$m=\frac{F}{a}\\m=\frac{42}{1.9}=22.1\ kg$$