How much work is required to slow a 1.35 x 10^3 kg vehicle down from 100.8 km/h to 90.9 km/h in 5.00 s? What is the power of the braking system in horse power?
4x4 vehicles are great until they break down. I suppose you can drive it as a 2x4 but it will not drive properly and will get very bad gas mileage. I would sell it and find something more practical.
given u 100.80 km/hr 100.80 x 1000/360 28 m/s v 90.9 km/hr 90.9 x 1000/3600 25.25 m/s Thus By v u - at 25.25 28 - a x 5 a 0.55 m/s^2 By F ma F 1.35 x 10^3 x 0.55 742.50 N By s ut - 1/2at^2 s 28 x 5 - 1/2 x 0.55 x (5)^2 s 133.13 m Thus W F.s W 742.50 x 133.13 98849.03 J By P W/t P 98849.03/5 P 19769.81 Watt P 19769.81/746 P 26.50 HP
