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A truck starts from rest and rolls down a hill with a constantacceleration. It travels a distance of 400 m in 20 sacceleration. Find the force acting on it if its mass is7 tonnes (Hint 1 tonne 1000 kgJ |
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Answer» U = 0 s = 400 mt = 20 secondm = 7 ✖ 1000 = 7,000 kg. (1 tonne = 1,000kg )a =?F=?soos = ut +1/2 at square put given numbers400=0+1/2 a(20)square=400/200=2 m/s square ........now F = m ✖ a = 7,000 ✖ 2= 14,000 N |
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