DP Physics (last assessment 2024)

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Question 22N.1.SL.TZ0.7

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1.SL.TZ0.7
Level SL Paper 1 Time zone TZ0
Command term Question number 7 Adapted from N/A
7.
[Maximum mark: 1]
22N.1.SL.TZ0.7

A ball of mass 1.5 kg strikes a force sensor and bounces. The ball experiences a change in velocity of 10 m s−1. The graph shows the variation with time t of the force F recorded by the sensor.

 

What is ΔT?


A.  0.15 s

B.  0.30 s

C.  0.60 s

D.  3.0 s

[1]

Markscheme

B

Examiners report

This question was very poorly answered, with over 50% of the candidates choosing incorrect alternative A. In fact, the question tests understanding of a relatively simple idea that the area under a force-time graph represents the change in momentum of the particle. Students need practice in evaluating areas of simple shapes and applying geometry in the context of physics graphs.

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