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09:38 358 DO Al b) A car having mass of m= 2,000 kg car is travelling with a velocity of v₁ = 100 km/h as illustrated by Figure 3 (a). Suddenly the driver spots a safety cone laying around on the road ahead and it takes 1-0.75 s of his reflex to begin pressing onto the brake pedal. By taking the coefficient of friction between all tires and the road μ = 0.25, determine; i) ii) the complete free body diagram of forces acting during the braking, and the distance (in m) needed before the car comes to a complete stop. 100 km/h Figure 3 (a) C l While climbing up an inclined road, a car as depicted in Figure 3 (b) begins from rest (v) = 0 km/h) and by increasing its speed uniformly to v₂ = 25 m/s in t = 30 s. If the car weighs m = 2,000 kg and having the engine efficiency of e=0.8, determine; i) the free body diagram of forces acting onto the car during climb, ii) the maximum power output that needs to be produced by the engine, and in) the average engine power output. Figure 3 (b) 4 10 î [12 Marks] |||| Safety Cone w [13 Marks] [CO3, PO3, C4] < [