Question

A car accelerates with uniform rate from Reston a straight road. The distance travelled in the last second of a three second interval from the start is 15m then find the distance travelled in first second.
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Answer 1

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Answer 2

Answer:

case 1 :-

here ,

• t = 3 sec .
• u = 0 m/s
• distance = S = 15 m

☆ S = ut ,+ 1/2 at² .

15 = 0 + 9/2 a

a = 3.3 m/s² .

__________________

Case 2 :-

here ,

• t = 1 sec .
• u = 0 m/s .
• a = 3.3 m/s² .
• S = ?

☆ S = ut + 1/2 at² .

S = 0 + 1/2 × 3.3 /2

S = 4 / 3.3 m .