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3 Forces and motion
Quick questions on Motion and kinematics: graphs, the suvat equations and free fall - OCR A-Level Physics A
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are motion graphs?Show answer
Reading a graph is often quicker and safer than algebra. The area under a velocity-time graph can be split into triangles and rectangles, and the gradient of a tangent gives acceleration even when the motion is non-uniform.
What is the equations of motion?Show answer
These equations apply only while the acceleration is constant. List the known quantities with a consistent sign convention (often taking the initial direction as positive), then pick the equation that fits.
What is q1?Show answer
State what the gradient of a velocity-time graph represents. [1 mark]
What is q2?Show answer
A train decelerates uniformly from to rest in . Find its deceleration. [2 marks]
What is q3?Show answer
An object falls freely from rest for . Find its speed and the distance fallen (). [2 marks]
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