H2P-120
Gradients and areas of motion graphs
H2 Physics · JC 1 · Hard · Gradients and areas of motion graphs
A car moves along a straight road. Its displacement–time graph is a straight line with constant positive gradient for the first 4 s, then a straight line with constant negative gradient for the next 3 s. Which statement about the car’s velocity is correct?
- The car moves with one constant velocity, then a different constant velocity in the opposite direction.
- The car’s speed increases steadily for 7 s.
- The car’s acceleration is constant and positive for 7 s.
- The car is at rest for the first 4 s, then moves backwards.
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