Question

a car is moving with a uniform acceleration of 5 metre per second square having a speed of 20 metre per second find the displacement in fourth second​

Answer 1

Answer:

u = 20 m/s

a = 5 m/s²

Sn = u + ( n-1/2 ) a

n = 4

Sn = 20 + ( 4-1/2 ) 5

     = 20 + 7 / 2 × 5

     = 20 + 17 .5

     = 37 . 5 m

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