A-LevelMathematicsMechanics9709/41 · May/June 2018 · Q13 Marks
A particle P is projected vertically upwards with speed 24 m s¯¹ from a point 5 m above ground level. Find the time from projection until P reaches the ground.
- A particle P is projected vertically upwards with speed 24 m s¯¹ from a point 5 m above ground level. Find the time from projection until P reaches the ground.[3]
Mark scheme
Marking points from the official mark scheme (May/June 2018). The mark or mark type is shown in brackets.
- [M1] Use s = ut + ½ at²
- [M1] Solve relevant 3 term quadratic
- [A1] t = 5
- [M1] Attempt to find the time taken to reach the highest point
- [M1] Find total height h reached and attempt to find time taken from highest point to ground level
- [A1] t = t₁ + t₂ = 5
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