A truck starts from rest and rolls down a hill with a constant accelaration. it travels 400m in 20s. find its accelaration. find the force acting on it if its mass is 7 tonnes(hint:1tonne=1000kg)
Answers
Answered by
3
Answer:
by using the second equation of motion
s=ut+1/2at^2
so
400= 1/2×a×20^2
→a=2m/s
F=Ma
F=7×2×1000
→F=14kilonewton
Similar questions