a car of mass 2400 kg moving with a velocity 30 metre per second is stopped in 10 seconds by applying breakers calculate the retardation and retarding force
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Mass of car = 2400kg
Initial velocity = 30m/s
Final velocity = zero
Time interval = 10s
We have to find retardation and magnitude of retarding force
★ Acceleration is defined as the rate of change of velocity.
It is a vector quantity having both magnitude as well as direction.
It can be positive, negative or zero.
SI unit : m/s²
⭆ a = (v - u)/t
⭆ a = (0 - 30)/10
⭆ a = -30/10
⭆ a = -3m/s²
[Negative sign shows retardation.]
★ Calculation of force :
⭆ F = mass × acceleration
⭆ F = 2400 × (-3)
⭆ F = -7200N
Cheers!
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