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Date May 2018 Marks available 1 Reference code 18M.1.HL.TZ2.7
Level Higher level Paper Paper 1 Time zone Time zone 2
Command term Question number 7 Adapted from N/A

Question

A ball of mass m collides with a vertical wall with an initial horizontal speed u and rebounds with a horizontal speed v. The graph shows the variation of the speed of the ball with time.

                                                     M18/4/PHYSI/HPM/ENG/TZ2/07

What is the magnitude of the mean net force on the ball during the collision?

A.     \(\frac{{m(u - v)}}{{({t_2} + {t_1})}}\)

B.     \(\frac{{m(u - v)}}{{({t_2} - {t_1})}}\)

C.     \(\frac{{m(u + v)}}{{({t_2} + {t_1})}}\)

D.     \(\frac{{m(u + v)}}{{({t_2} - {t_1})}}\)

Markscheme

D

Examiners report

[N/A]

Syllabus sections

Core » Topic 2: Mechanics » 2.4 – Momentum and impulse
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