IB Physics HL A 1 7 Uniform Vs Non Uniform Acceleration Questions

Practise IB Physics HL A.1.7 by analysing variable acceleration caused by resistance or a changing gravitational field.

Exam points

Describe and interpret position, velocity and acceleration in one-dimensional motion using equations, vectors and motion graphs.
Use gradients and areas on displacement–time and velocity–time graphs to determine motion quantities.

[Maximum number: 2]

This question is about the motion of a ship and observing objects from it.

The ship's engines are switched off and the ship comes to rest from a speed of $7 \mathrm{~m} \mathrm{~s}^{-1}$ in a time of 650 s .

It is unlikely that the acceleration of the ship will be uniform given that the resistive force acting on the ship depends on the speed of the ship. Using the axes, sketch a graph to show how the speed v varies with time t after the ship's engines are switched off.

Figure for Question IB Physics HL A 1 7 Uniform Vs Non Uniform Acceleration Questions question 1 — IB Physics HL

starts at $7.0 / 7.2 \mathrm{~m} \mathrm{~s}^{-1}$ ;
(allow ECF from (d)(i))
correct shape;

Figure for Answer to Question IB Physics HL A 1 7 Uniform Vs Non Uniform Acceleration Questions question 1 — IB Physics HL

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IB Physics HL A 1 7 Uniform Vs Non Uniform Acceleration Questions question 1