Question

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: *

2 points

Option 1

+ 2 m/s2

− 2 m/s2

− 0.5 m/s2

+0.5 m/s2
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Answer 1

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Answer 2

Answer:

a=-0.5m/s²

Explanation:

u=10m/s

v=0m/s

t=20s

a=(v-u)/t

a=(0-10)/20

a=-10/20

a=-0.5m/s²