Physics · May / June 2017 · Paper 11 · Question 5
5054Balanced and unbalanced forces
A resultant force acts on an object and causes it to move in a straight line. The graph shows how the resultant force varies with time. [graph: resultant force vs time, straight line decreasing from maximum at t=0 to zero at t0] Which graph is the speed-time graph for the object?
- Aspeed-time graph: curve rising from origin with decreasing gradient, becoming horizontal at t0
- Bspeed-time graph: curve decreasing from a maximum at t=0, approaching zero at t0
- Cspeed-time graph: straight line rising from origin to t0, then horizontal
- Dspeed-time graph: straight line decreasing from a maximum at t=0 to zero at t0
As printed in the paper
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Correct answer: A. speed-time graph: curve rising from origin with decreasing gradient, becoming horizontal at t0
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