Question

The graph between displacement and time in a motion along straight is detached below. Which interval indicates that no force is acting on the particle?

• A. RS
• B. PQ
• C. PQ and OP
• D. OP

Answer 1

The correct option is A RS

The gradient of a velocity-time graph at a particular time gives the acceleration of the object at that time. The area under a velocity-time graph gives the displacement. For the constant negative acceleration graphs the initial displacement is negative and the initial velocity is positive