Physics - NLM Question with Solution | TestHub

Given, $\mathrm{F}=10\mathrm{N},{\mathrm{v}}_{\mathrm{i}}=0,\mathrm{m}=0.5\mathrm{kg},\Delta \mathrm{t}=0.25\mathrm{s}$ $\because$ Change in momentum, $\Delta \mathrm{p}={\mathrm{p}}_{\mathrm{f}}-{\mathrm{p}}_{\mathrm{f}}$ $\begin{array}{rlr}\because & \Delta \mathrm{p}& =\mathrm{F}\cdot \Delta \mathrm{t}\\ & & \mathrm{F}\cdot \Delta \mathrm{t}={\mathrm{p}}_{\mathrm{f}}-{\mathrm{p}}_{\mathrm{i}}\end{array}$ $\begin{array}{rlrl}\text{ or }& & 10\times 0.25& ={\mathrm{p}}_{\mathrm{f}}-{\mathrm{mv}}_{\mathrm{i}}={\mathrm{p}}_{\mathrm{f}}-0.5\times 0\\ \text{ or }& & {\mathrm{p}}_{\mathrm{f}}& =2.5\mathrm{N}/\mathrm{s}\end{array}$