Asked by fathima12 | 11th Nov, 2009, 09:37: PM
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.
Answered by | 12th Nov, 2009, 01:43: AM
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