Payne

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Answer:

Given:

- Initial velocity = u= 0m/s
- Final velocity = v = 144km/ hour
- Time = t = 20sec

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Need to Find:- Distance travelled by car in 1st 20 sec=?

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Solution:v= 144km/ hr

➟ v =

➟ v= 40m/s

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We know, from 1st equation of motion that:

v = u + at

➟ a =

━━━━━━━━━

We know from 2nd equation of motion that:

━━━━━━━━━

Substitute the value of a from i to ii

Disatnce travelled is 400m

235

Niamh Poole

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