A student carries a school bag horizontally along a straight corridor for at constant…
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A student carries a 4kg school bag horizontally along a straight corridor for 20m at constant speed.
(i) Identify the sign of the work done by the gravitational force on the bag.
(ii) Identify the sign of the work done by the student’s force that supports the bag.
(iii) What is the sign of the net work done on the bag during the walk?