Question

The speed of a car reduces from 15ms to 5ms over a displacement of 10 m. What is the uniform acceleration of the car?​

Answer 1

Answer:

10

Step-by-step explanation:

u=15m/s

v=5m/s

s=10m

according to 3rd eq. of motion

v²-u²= 2as

(5)²-(15)²=2×a×10

25-225=20a

-200= 20a

-10=a

hence acceleration is -10m/s²

it is retardation because velocity is reducing

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