Question

In velocity time graph of a body, two points are given as A(40,5) and B(20,2). What is the acceleration of the body

Answer 1

0.15 m/s²

Step-by-step explanation:

Acceleration is rate of change of velocity-time function. We can find acceleration by finding the slope. The slope of graph can be found by:

`\displaystyle{a = ( \Delta v)/( \Delta t) \: \to \: (v_f - v_i)/(t_f- t_i)}`

Substitute in:

`\displaystyle{a = (5 - 2)/(40 - 20)} \\ \\ \displaystyle{a = (3)/(20)} \\ \\ \displaystyle{a = 0.15 \: \text{m/s}^(2) }`

Therefore, the acceleration is 0.15 m/s²