A bus starts from rest and rolls down a hill with a constant acceleration . It travels a distance of 300m in 5sec . Find its acceleration . Find the force acting on it if it's mass is 8kg
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Explanation:
See use here equation of motion, because it is given in question that acceleration is constant.....
S= ut +1/2 at²
S=300m , u=0(initial velocity, because bus start from rest given in question)…
t=5sec so.....
By putting all the values you get acceleratin as 24m/s² (i hope you can do the calculation part)
Force = mass × acceleration
= 8kg× 24m/s² = 192 Newton...
I hope it will help...physics is game of formula and concept, memorize formula along with concept and you win the battle..
For any query feel free to ask......
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