\fA C look, the force on the can't as given by fs mas modv [as de alf ) ( on = mass ) As the carve is not a straight line beton from velocity- time graph, acceleration is the slope, B & C for so I took a small AB & CD , section. Dy = tom &7 Slope mis Am straightline segment Slope = 0 so / force so For AB & CD may be, the force Q = 0', mstemo' = 0") Now for remaining part BC, vary a little bit. But this as the the slope , (m) 1 2 - 4 m/s J took a small segment correct ams. 8 - 7 ms from v = 4 to 2 m, = - 2x 10 m /s 2 = a for Easy calculation time Now At = +8-7 = 1 ms ) Force F s 5X ( - 2 x 103 ) N 5 - 10 KN