It is difficult to walk on the ice than on the road because
A. Ice is harder than the road
B. Road is harder than the ice
C. Ice does not offer any reaction when we push it with our foot
D. Ice has a lesser friction than the road
Answer: Option D
A. Ice is harder than the road
B. Road is harder than the ice
C. Ice does not offer any reaction when we push it with our foot
D. Ice has a lesser friction than the road
Answer: Option D
Which of the following can do more work?
A. A raised hammer
B. A bullet fired by the gun
C. A moving stone
D. A rotating wheel
A. Energy released by a moving object
B. Energy emitted during mechanical work
C. The sum of the kinetic energy and potential energy of an object
D. Equal to the rate of work done
A. Chemical energy
B. Potential energy
C. Kinetic energy
D. Heat energy
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