DP Physics (last assessment 2024)

Question 21M.2.SL.TZ2.1d

Date	May 2021	Marks available	[Maximum mark: 1]	Reference code	21M.2.SL.TZ2.1d
Level	SL	Paper	2	Time zone	TZ2
Command term	Calculate, State	Question number	d	Adapted from	N/A

[Maximum mark: 1]

21M.2.SL.TZ2.1d

A football player kicks a stationary ball of mass 0.45 kg towards a wall. The initial speed of the ball after the kick is 19 m s⁻¹ and the ball does not rotate. Air resistance is negligible and there is no wind.

(d)

The player kicks the ball again. It rolls along the ground without sliding with a horizontal velocity of $1.40 {m s}^{- 1}$ . The radius of the ball is $0.11 m$ . Calculate the angular velocity of the ball. State an appropriate SI unit for your answer.

[1]

Markscheme

$13 « rad » s^{- 1}$ ✓

Unit must be seen for mark

Accept Hz

Accept $4 π « rad » s^{- 1}$

Syllabus sections

Core

Core » Topic 6: Circular motion and gravitation » 6.1 – Circular motion

Core » Topic 1: Measurements and uncertainties » 1.1 – Measurements in physics

Core » Topic 1: Measurements and uncertainties

Core » Topic 6: Circular motion and gravitation

Question 21M.2.SL.TZ2.1d

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