A worker carries a suitcase horizontally at constant speed along a straight

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A worker carries a

15\,\text{kg}

suitcase horizontally at constant speed along a straight, level road for

20\,\text{m}

. What is the work done by the gravitational force on the suitcase during this walk? (a)

+300\,\text J

(b)

0\,\text J

(c)

+2940\,\text J

(d)

+147\,\text J