IB Physics HL A 1 6 Uniform Acceleration Equations Questions

Practise IB Physics HL A.1.6 by analysing constant-acceleration stages and linking equations across a complete motion.

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: 4]

This question is in two parts. Part 1 is about kinematics and gravitation. Part 2 is about radioactivity.

Part 1 Kinematics and gravitation

A ball is released near the surface of the Moon at time t=0. The point of release is on a straight line between the centre of Earth and the centre of the Moon. The graph below shows the variation with time t of the displacement s of the ball from the point of release.

Figure for Question IB Physics HL A 1 6 Uniform Acceleration Equations Questions question 1 — IB Physics HL

(a)

Use the graph to

[ 3 ]

(i)

calculate a value for the acceleration of free fall close to the surface of the Moon.

[ 3 ]

any correct method used;
correct reading from graph;
1.6 to $1.7 \mathrm{~m} \mathrm{~s}^{-2}$ ;

(b)

Calculate the speed of an identical ball when it falls 3.0 m from rest close to the surface of Earth. Ignore air resistance.

[ 1 ]

$\quad 7.7 \mathrm{~m} \mathrm{~s}^{-1}$ ;

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IB Physics HL A 1 6 Uniform Acceleration Equations Questions question 1

Question (a)

Question (i)

Question (b)