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3.2 Q: Kinematics

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Question 121

In this question use g=9.8g = 9.8g=9.8 m s−2^{-2}−2

A ball is projected vertically upwards from ground level with speed 21 m s−1^{-1}−1.

The ball is modelled as a particle moving freely under gravity.

a.

Using the model, find the two times at which the ball is 15 metres above the ground.

[4]
b.

State one modelling assumption you have made in part (a), and explain the effect it has on your answers.

[2]
Markscheme

3.2 Q: Kinematics Questions

  1. A Level
  2. /Maths
  3. /3.2 Q: Kinematics

265 exam-style questions on AQA A Level Maths 3.2 Q: Kinematics, covering 3.2.1 Language of kinematics, 3.2.2 Graphs in kinematics, 3.2.3 Constant acceleration formulae, 3.2.4 Calculus in kinematics (A-level only), and 3.2.5 Motion under gravity and projectiles (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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