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IB Physics HL A 1 2 Velocity and Acceleration Rates Questions

Practise IB Physics HL A.1.2 by analysing acceleration and velocity graphs and judging what each graph can establish.

Syllabus
First assessment 2025
Course
Physics HL
Level
HL

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.

IB Physics HL A 1 2 Velocity and Acceleration Rates Questions question 1

[Maximum number: 2]

A toy rocket is made from a plastic bottle that contains some water.

Air is pumped into the vertical bottle until the pressure inside forces water and air out of the bottle. The bottle then travels vertically upwards.

Figure for Question IB Physics HL A 1 2 Velocity and Acceleration Rates Questions question 1 — IB Physics HL

The air-water mixture is called the propellant.
The variation with time of the vertical velocity of the bottle is shown.

Figure for Question IB Physics HL A 1 2 Velocity and Acceleration Rates Questions question 1 — IB Physics HL

The bottle reaches its highest point at time T1T_{1} on the graph and returns to the ground at time T2T_{2}. The bottle then bounces. The motion of the bottle after the bounce is shown as a dashed line.

Estimate the acceleration of the bottle when it is at its maximum height.

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