Question

the mass of ball is 0.04kg. it starts rolling on the ground at 20m/s and comes to stop after 10s, calculate the force which stops the ball​

Answer 1

$\small \bf \blue{hey \: mate \: here \: is \: ur \: ans} \\ \\ \small \bf \red{ \huge \: solution} \\ \\ \small \bf \red{given \: that} \\ \\ \small \bf \red{m = 0.04kg} \\ \\ \small \bf \red{0.04 \times 1000 = 40 \: g} \\ \\ \small \bf \red{u = 0} \\ \\ \small \bf \red{v = 20 \: m \: per \: s} \\ \\ \small \bf \red{t = 10 \: s} \\ \\ \small \bf \red{using \: this \: formula} \\ \\ \small \bf \red{v = u + at} \\ \\ \small \bf \red{20 = 0 + a \times 10} \\ \\ \small \bf \red{a = \frac{20}{10} } \\ \\ \small \bf \red{a = 2 \: m \: per \: {s}^{2} } \\ \\ \small \bf \red{again \: using \: this \: formula} \\ \\ \small \bf \red{f = ma} \\ \\ \small \bf \red{f = 40 \times 2} \\ \\ \small \bf \red{f = 80 \: n}$