WorksheetsWork and Power
Total questions: 10
Worksheet time: 6mins
The SI unit for work is
watt
Newton
m/s
joule
The SI unit for power is the
Newton
joule
watt
m/s
You lift a box 1.5 m straight up to put it in a truck, you exert an upward force of 200 N for 1.2 s. How much power did you use to do this?
225 W
250 W
160 W
200 W
You lift a book from the floor and place it on a table 1.0 m above the ground. How much power is used if the upward force on the book is 15 N and you do the work in 2 s?
15 W
7 W
30 W
7.5 W
How much work is done when a 25 N horizontal force is used to push a potted plant 1.5 meters across the floor?
37.5 j
16.7 j
25 j
0 j
Work is the product of
time and force
power and force
motion and force
force and distance
A waiter carries a 2.0 N tray 10 meters to your table, how much work is done?
10 j
0 j
5 j
20 j
A student exerts a force of 500 N pushing a box 10 m across the floor in 4 s. How much work does the student perform?
500 j
1250 j
125 j
5000 J
