Homework Answers
13)
Applying law conservation of energy;
Let velocity is 'v' m/s
Kinetic energy = potential energy
mv^2 / 2 = mgh
v^2 = 2gh = 2 * 9.8 * 14 = 274.4
So, v = sqrt (274.4)
v = 16.57 m/s ....Answer
14)
Momentum (p) = mv
v = p/m = 60/2500 = 0.024 m/s
Acceleration (a) = v/t = 0.024/8 = 0.003 m/s^2
Force (F) = m * a = 2500 * 0.003 = 7.5 Newton ...Answer
Let me know if any doubts.
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