Question

A ball of mass 100 g is moving with a velocity 10 m s it brought to rest after travelling a distance 5 m. by
applying a resistive force, calculate: (i) the retardation caused by the force, (ii) the resistive force applied​

Answer 1

Answer:

Let retardation a .

$2as = {v}^{2} - {u}^{2} \\ u = 10 \: \: and \: \: v = 0 \\ 2a(5) = 0 - {10}^{2} \\ a = - 10 \: \: \frac{m}{ {s}^{2} }$

And force

$f = ma = \frac{100}{1000} kg \times 10 = 1 \: N$