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CBSE Class 9 Answered

momentum
Asked by fathima12 | 11 Nov, 2009, 09:37: PM
answered-by-expert Expert Answer

Momentum = massxvelocity

1/ Momentum Initially = 0.5x20 = 10 kgm/s

2/Momentum at the highest point = 0.5x0 = 0, since velocity at the highest point is zero.

3/Retarding force = mg = 0.5x9.8 = 4.9 N, since retardation is from gravitational force.

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TopperLearning.

Answered by | 12 Nov, 2009, 01:43: AM

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