Question

Aur truck starts from rest and roll down a heel with constant acceleration it travels distance of 400 metre in in 20 seconds find its acceleration .find force acting on it if its mass is 7000 kg

Answer 1

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Answer 2

Answer:

HI !

Initial velocity =u = 0

Distance =s = 400 m

time = t= 20 sec

a = acceleration

Equation of motion :-

s = ut + 1/2at²

400 = 0 + 1/2 × a × 20 × 20

400 = 200 a

a = 2

acceleration = a = 2 m/s²

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Force = F

Mass = m = 7000 kg

Acceleration = a = 2 m/s²

F = ma

= 7000 × 2

= 14000 N

Force acting on it is 14000 N