When a car driver travelling at a speed of 10 m/s applies brakes and b

1.	When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest in 20 s, then the retardation will be:
Answer» ong>Answer: -0.5 m/s² Explanation: given, v = 0 m/s (since the car COMES to rest) u = 10 m/s t = 20 seconds ACCELERATION = (v-u)/t = (0-10)/20 = -1/2 acceleration = -0.5 m/s² We know that, negative acceleration is also KNOWN as deceleration or retardation. THEREFORE, deceleration/retardation = 0.5 m/s²

When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest in 20 s, then the retardation will be:

Answer»

ong>Answer:

-0.5 m/s²

Explanation:

given,

v = 0 m/s (since the car COMES to rest)

u = 10 m/s

t = 20 seconds

ACCELERATION = (v-u)/t

= (0-10)/20

= -1/2

acceleration = -0.5 m/s²

We know that, negative acceleration is also KNOWN as deceleration or retardation.

THEREFORE,

deceleration/retardation = 0.5 m/s²

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When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest in 20 s, then the retardation will be:

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