Physics (AS & A Level) · May / June 2018 · Paper 12 · Question 6
A projectile is launched at an angle to the horizontal at time t = 0. It travels over horizontal ground, as shown. Assume that air resistance is negligible. Which graph best shows the variation with t of the speed of the projectile from when it is launched to when it lands on the ground?
- Aspeed against t: horizontal straight line at constant speed
- Bspeed against t: straight line decreasing to zero then straight line increasing
- Cspeed against t: curve decreasing to a minimum then increasing, minimum above zero
- Dspeed against t: curve decreasing to zero then increasing
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Correct answer: C. speed against t: curve decreasing to a minimum then increasing, minimum above zero
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