Answers

2015-06-08T06:33:43+05:30
From relation, v2 = u2 + 2aS
or, 0 = 75x75 + 2xax0.05
or, a = -5625/0.05 m/s2 = 112500 m/s2

Resistive force = 112500 x 20/100 N = 2250 N (answer)
0