Question

A car accelerated uniformly from 18 km/h to 36 km/h within a distance

of 15 metre. The uniform acceleration of the car is

a. 2.5 m/s2( )
b. 5 m/s2( )
c. 1.5 m/s2( )
d. 3 m/s2( )​

Answer 1

18kM/hr=5M/S

36kM/hr=10m/s

Applying 3rd equation,

v2-u2 = 2aS

⇒100-25=2 x a x 15

75=30 x a

a =75/30 =1.5

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