Question

Which of the following information is incorrect regarding the above graph

• A. The body travels 15 m in the first 3 seconds.
• B. The speed of the body after 5 seconds is zero.
• C. The initial speed of the body is 10 m/s.
• D. The body travels 25 m in the first 6 seconds.

Answer 1

The correct option is C The initial speed of the body is 10 m/s.

Slope of position-time graph gives the instantaneous speed of the body.

Slope of the graph initially $=\frac{5-0}{1-0}=5m/s$

Thus initial speed of the body is $5m/s$.

Thus statement in option C is false.