Question

velocity of a body is 4m/s and 10m/s at time 1 and 3 second respectively. find initial velocity and acceleration if acceleration is constant​

Answer 1

Explanation:

constant acceleration means acceleration of part A and B are equal....(look at the diagram)given

first of all let's find the acceleration between 4ms^-1 and 10 ms^-1

time = 2s (3-1)

$v = u + at \\ 3 = 1 + 2a \\ 2 = 2a \\ a = 1m {s}^{ - 2}$

let's find the initial velocity

$v = u + at \\ 4 = u + 1 \times 1 \\ 4 - 1 = u \\ 3m {s}^{ - 1} = u$