DP Physics (last assessment 2024)

Question 21M.2.SL.TZ1.a

Date	May 2021	Marks available	[Maximum mark: 1]	Reference code	21M.2.SL.TZ1.a
Level	SL	Paper	2	Time zone	TZ1
Command term	Show that	Question number	a	Adapted from	N/A

[Maximum mark: 1]

21M.2.SL.TZ1.a

Two players are playing table tennis. Player A hits the ball at a height of 0.24 m above the edge of the table, measured from the top of the table to the bottom of the ball. The initial speed of the ball is 12.0 m s⁻¹ horizontally. Assume that air resistance is negligible.

Show that the time taken for the ball to reach the surface of the table is about 0.2 s.

[1]

Markscheme

t = « $\sqrt{\frac{2 d}{g}}$ =» 0.22 «s»
OR

t = $\sqrt{\frac{2 \times 0.24}{9.8}}$ ✓

Answer to 2 or more significant figures or formula with variables replaced by correct values.

Syllabus sections

Core

Core » Topic 2: Mechanics » 2.1 – Motion

Core » Topic 2: Mechanics

Question 21M.2.SL.TZ1.a

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