Question

[Ans. 90 km/h)
60 km/h?
7. A car is travelling at 36 km/h. If its velocity increases to 72 km/h in 5 s, then find the acceleration of the car in
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Answer 1

Answer:

26676/6/3/573573763/637763776377676767657736437673676776

Answer 2

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QUESTION :-

A car is travelling at 36km/h. If its velocity increases to 72km/h in 5s, then find the acceleration of the car in SI unit.

SOLUTION :-

Initial Velocity (u) = 36km/h

Final Velocity (v) = 72km/h

Time (t) = 5 seconds

To convert hours into seconds

$1km/h = \frac{1000}{60 \times 60} = \frac{5}{18} m/s$

$u = 36 \times \frac{5}{18} = 10m/s$

$v = 72 \times \frac{5}{18} = 20m/s$

$Acceleration = \frac{change \: in \: velocity}{time}$

$a = \frac{v - u}{t}$

$a = \frac{20 - 10}{5}$

$a = \frac{10}{5}$

$a = 2m/s$

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