The driver of a car moving with a speed of 10 m/s sees a child standing in the middle of the road and brings his vehicle to rest in 4.0 s . What is the average retarding force on the vehicle? The mass of the car together with the driver is 1000 kg.
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V = 0
U = 10
T = 4
WE KNOW THAT ,
V = U + AT
0 = 10 - A*4. ( RETARDATION)
-10 = - A*4
10/4 = A
A = 2.5
WE SHOULD FIND OUT THE RETARDING FORCE ....
THEREFORE,
F = MA
F = 1000*2.5 ( M = 1000)
F = 2500
HOPE IT IS USEFUL....
U = 10
T = 4
WE KNOW THAT ,
V = U + AT
0 = 10 - A*4. ( RETARDATION)
-10 = - A*4
10/4 = A
A = 2.5
WE SHOULD FIND OUT THE RETARDING FORCE ....
THEREFORE,
F = MA
F = 1000*2.5 ( M = 1000)
F = 2500
HOPE IT IS USEFUL....
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