A truck starts from rest and rolls down a hill with a constant acceleration. It travels a distance of 400 m in 20 seconds. Find it's acceleration. Find the force acting on it if it's mass is 7 metric tonnes. *
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Answer:
acceleration=2m/s^2
force =14000N
Explanation:
u=0
s=400m
t=20s
s=ut+1/2at^2
400=0(20)+1/2a(20×20)
400/400=1/2a
a=2m/s^2
mass=7 metric tonnes =7000kg
force=mass×accelaration
F=7000×2
=14000N
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