NEW
Font size
WorksheetsWork, energy
Total questions: 10
Worksheet time: 8mins
SI Unit of Energy
Newton
watts
Joules
meter
Calculate the PE of a 2 kg cat perched 10 meters above the ground.
20J
200J
2.04J
200W
When my velocity doubles, my kinetic energy increases by ______ times.
4
3
1.5
4.5
Calculate the Kinetic Energy (KE) of a girl whose mass is 50 kg who is moving at 4 m/s.
200 J
800 J
400 J
100 J
Bernie dives from a the top of a flagpole into a swimming pool below. His potential energy at the top is 10,00J. What is his kinetic energy when his potential energy reduces to 9.0J?
9990.3J
991.0J
1009.7J
10009.7J
How much work is done on a vacuum cleaner pulled 3 m by a force of 50 N at an angle of 30-degrees above the horizontal?
50J
80J
130J
150J
If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?
272 m
17 m
4.05 m
272 cm
Gravitational potential energy depends on the ________ and ________ of the object.
Height and mass
Friction and movement
Mass and Movement
Height and Friction
Why does the total amount of mechanical energy stay constant in a system?
energy is not created or destroyed
energy leaves
energy enters
total energy =0
Work done by the sun in moving Earth in an orbit around it is an example of
positive work
negative work
zero work
none of the above
