Question

The velocity of a body at any instant is 10m/'s. After 5 sec velocity of the particle is 20 m/'s. The velocity at 3 seconds before is

Answer 1

In the question it should be “……body at an instant is 10 m/s……”

Acceleration = (v - u) / t
= (20 - 10) / 5
= 2 m/s²
Acceleration of body is 2 m/s²

Now,
v = u + at
10 = u + (2 × 3)
u = 10 - 6
u = 4 m/s
Velocity 3 seconds before was 4 m/s

Answer 2

Answer:

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