Calculating Work
If d= 20m
F= 5N
What is work?
100 J
If Work= 110 J
F= 10 N
What is D?
11 m
If work = 15 J
D = 5m
What is F?
Sarah is pushing a box across the floor to help her friend move. The box weighs 50 kilograms. Sarah exerts a constant force of 100 newtons on the box, pushing it a distance of 5 meters.
How much work does Sarah do to move the box across the floor?
500 J
If d= 500m
F= 13N
What is work?
6500 J
If Work= 3 kJ
F= 3000 N
What is D?
1km or 1000 m
If work = 30 J
D = 2m
What is F?
15 N
Emily is lifting a bookshelf to rearrange her room. The bookshelf weighs 200 newtons. Emily lifts the bookshelf a vertical distance of 2 meters to place it on a higher shelf.
How much force does Emily exert to lift the bookshelf?
200N
If d= 10m
F= 100N
What is work?
1000 J or 1 kJ
If Work= 250J
F= 2000 N
What is D?
0.125 m
If work = 1 kJ
D = 10m
What is F?
100 N
Samantha is pushing a shopping cart through a supermarket aisle. She applies a constant force of 30 newtons to move the cart. The aisle is 10 meters long.
How much work does Samantha do to push the shopping cart the entire length of the aisle?
300J
If d= 0.5 km
F= 34 N
What is work?
17000 J or 17 kJ
If Work= 12 kJ
F= 50 N
What is D?
240 m
If work = 0.24 kJ
D = 60m
What is F?
A weightlifter is lifting a barbell during a workout session. He lifts the barbell, which weighs 250 kilograms, to a height of 2 meters. The work done by the weightlifter is 5000 joules.
What is the force exerted by the weightlifter to lift the barbell, and what is this value in kilojoules?
5 kJ
If d= 0.34 km
F= 14 N
What is work?
4760 J or 4.76 kJ
If Work= 0.12 kJ
F= 0.6 N
What is D?
200 m
If work = 3.5 kJ
D = 1 km
What is F?
3.5 N
Tom is pushing his car, which has broken down, to the nearest gas station. He applies a constant force of 500 newtons to move the car. The work done by Tom is 20,000 joules.
How far does Tom push the car to reach the gas station?
40m