Question

The velocity of the particle at an instant is 10 metre per second after 5 seconds ,the velocity of a particle is 20 metre per second .The velocity at 3 seconds before is​

Answer 1

Answer:

$\huge\sf\pink{Answer:}$

The value of u will be 4m/s

$\huge\sf\red{Explanation:-}$

The initial velocity be “u” as per question after 3 seconds the velocity becomes 10 metre per second and again after 5 seconds the velocity becomes 20 metre per second we are given that acceleration is constant.

We can say acceleration from 10 is equal to acceleration from 10 to 20.

$u - \frac{10}{3 } = \frac{20 - 10}{5}$

On solving we get; 5u = 50+30-60

$\huge\boxed{U= 4m/s}$