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Question

A car moving with uniform acceleration covers 450 m in a 5 second interval, and covers 700 m in the next 5 seconds interval. The acceleration of the car is

A
7 m/s2
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B
50 m/s2
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C
25 m/s2
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D
10 m/s2
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Solution

The correct option is D 10 m/s2
When car covers 450 m

S=ut+12at2

450=5u+12×a×(5)2....(1)

When car covers remaining 700 m also

1150=10u+12×a×(10)2....(2)

Solving equation (1) and (2)

u=65 m/sec

a=10 m/sec2

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