#Mods challenge
On applying brakes a vehicles takes 10 seconds to stop ,if it was running at a speed of 40m/s then how long distance will
covered it before it stop
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Answers
Answered by
0
Answer:
he takes only 10 seconds to stop
Answered by
1
Answer:
Given :
▪ Stopping time = 10 s
▪ Initial velocity = 40 m/s
To Find :
▪ Stopping distance of vehicle.
✒ First we have to find out retardation of vehicle after that we can calculate stopping distance with the help of kinematics formula.
Apply, v = u + at
0 = 40 - 10*a
a = -40/10
a = -4 m/s^2
Negative sign shows retardation.
Applying, v^2 - u^2 = 2*a*s
(0)^2 - (40)^2 = 2(-4)s
1600 = 8*s
s = 1600/8
s = 200 m
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