Work , energy and power questions | form one Physics

a) Define the term “power”.

b) A man whose mass is 75 kg walked up 12 steps of 20 cm each in 5 seconds. Find the power that was developed.

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UNSOLVED

1. Mention types of mechanical energy
2. A body of mass 10kg is raised to a height of 4 metres above the ground in 2 seconds.
   (i) Find the energy possessed by the body after raising it.
   (ii) What type of energy is possessed by the body?

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UNSOLVED

When work output is equal to work input, it is called
A. principle of momentum.
B. principle of work.
C. principle of energy conservation.
D. principle of moments.

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UNSOLVED

Potential energy and Kinetic energy are similar because:
A. Both produce heat.
B. Both are measured in Watts.
C. One is a substitute for the other.
D. Both are forms of Mechanical energy.

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UNSOLVED

What do you understand by the following terms:
(i) Work
(ii) Power
(iii) Energy

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UNSOLVED