Question

a car aquires a velocity 40km/hr in 50 min. If the acceleration of the car is 2 km / hr² . Find the approx initial velocity of the car .​

Answer 1

The acceleration of the car is 0.37 m/s².

Explanation:

Given that,

Velocity of car = 40 km/h

Time t = 30 s

Using equation of motion

v = u+atv=u+at

Where, v = final velocity

u = initial velocity

t = time

a = acceleration

Put the value of v and t in equation (I)

40=0+a\times3040=0+a×30

a = \dfrac{40\times\dfrac{5}{18}}{30}a=

30

40×

18

5

a = 0.37\ m/s^2a=0.37 m/s

2

Hence, The acceleration of the car is 0.37 m/s².

Answer 2

= 60 km answer


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