Question

Question 31:
A motorcyclist starts from rest and reaches a speed of 6 m/s after travelling with uniform acceleration for 3 s. What is his acceleration ?

Lakhmir Singh Physics Class 9

Answer 1

given:Initial velocity = u = 0 as starting from rest

Final velocity = v = 6 m/s

Time taken in the change= t = 3 sec

thus acceleration a =( v-u)/t

⇒ acceleration =( 6-0)/3 = 2 m/s2.

Answer 2

ACCELERATION
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✡ INITIAL VELOCITY ✡ ( U ) = 0 m / s

✡ FINAL VELOCITY ✡ ( V ) = 6 m / s

✡ TIME ✡ ( T ) = 3 s

✡ ACCELERATION ✡ = V - U / T

✡ ACCELERATION ✡ = 6 - 0 / 3

✡ ACCELERATION ✡ = 6 / 3

✡ ACCELERATION ✡ = 2 m / s^2
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