Work, Energy and Power · Work and kinetic energy
A spherical ball of mass 2 kg falls from a height of 10 m and is brought to rest after penetrating 10 cm into sand. The average force exerted by sand on the ball is N. (Take )
- (1)1980
- (2)2020
- (3)2000
- (4)1000
We corrected a printing error in the original paper
Assumption “(Take )” added; the source leaves it unstated, and with option (1) would be correct.
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