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WorksheetsWork and Energy
Total questions: 15
Worksheet time: 28mins
When Force applied on an object is parallel to the displacement of the object then the work done on an object is ___________________
Parallel
Negative
Positive
Zero
When you pull back the lever on a pinball machine and then release it to launch the ball up a ramp, which of the following energy transformations occurred? (Select all that apply)
Kinetic --> Gravitational Potential
Elastic Potential --> Gravitational Potential
Kinetic --> Elastic Potential
Chemical Potential --> Kinetic
Elastic Potential --> Kinetic
A force of 80 N is used to pull a 10-kg block at an angle of 60 degrees (shown above) to the right. If the block moves 5 meters to the right, how much work was done on the block.
4000 N*m
200 N*m
2000 N*m
346.4 N*m
400 N*m
A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. The work done against the gravitational force will be (g = 10 ms²)
(a) 6 × 10³ J
(b) 6 J
(c) 0.6 J
(d) zero
A dog weighing 25 kg, while chasing a cat, jumps over a fence of height 1.6 m. What is the potential energy of dog at the top of fence ?
(Take 'g'=10 m s-2 )
(a) 160 Joules
(b) 320 Joules
(c) 380 Joules
(d) 400 Joules
What is mechanical energy?
total kinetic energy
the energy of motion
total kinetic and potential energy
temperature plus heat
The work-kinetic energy theorem says that the net work done by all the forces acting on an object is equal to the change in the ………. of the object.
mechanical energy
work
momentum
kinetic energy
