Question

Draw a velocity time graph when the body is in variable acceleration.

Answer 1

Answer:

velocity time graph with acceleration

Explanation:

acceleration and velocity are both positive and increasing.

Answer 2

Answer:

Explanation:

Given

We know that slope of v-t graph gives acceleration . It is given that acceleration is variable so slope is changing constantly i.e. it is either increasing or decreasing .

From origin to A slope is increasing i.e. acceleration is increasing and From A to B slope is decreasing i.e. acceleration is decreasing.

From B to C Slope is again increasing i.e. acceleration is again increasing

Acceleration can follow  any curve as it is variable  

For example $y=x^3$

or $y=ax^2+bx+c$