A truck starts and rolls down a hill with a constant acceleration, it travels a distance fo 400m in 20s , find it's acceleration also find the force accting on it if it's mass is 700kg.
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manthanmk0108
Answer: acceleration,a=2m(s)^-2;Force,F=1400N Explanation: Initial velocity of truck, u=0;time,t=0s; distance covered, s=400m;acceleration,a=?; mass of truck, m=700 Kg; force on truck, F=?
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Explanation: Initial velocity of truck, u=0;time,t=0s;
distance covered, s=400m;acceleration,a=?;
mass of truck, m=700 Kg; force on truck, F=?
We know, s=ut+(1/2)a(t)^2
⇒400=0×20+(1/2) ×a×(20)^2
⇒400=200a
or a=400/200
a=2m(s)^-2
Force on truck, F=ma=700×2=1400N
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