A toy car of mass 600 g is pulled along a straight corridor by several children…
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A toy car of mass 600 g is pulled along a straight corridor by several children exerting horizontal forces.
(i) At a certain instant the forces acting on the car are: 2.5 N forward, 1.5 N backward, and 0.8 N forward. Determine the net force acting on the car, specifying its direction.
(ii) Calculate the acceleration of the car produced by the net force.
(iii) The children maintain the same set of forces for 4 s. If the car was initially at rest, find its speed at the end of 4 s.