DP Physics (last assessment 2024)

Question 21M.2.SL.TZ2.b.i

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

b.i.

[Maximum mark: 2]

21M.2.SL.TZ2.b.i

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.

The ball leaves the ground at an angle of 22°. The horizontal distance from the initial position of the edge of the ball to the wall is 11 m. Calculate the time taken for the ball to reach the wall.

[2]

Markscheme

$horizontal speed = 19 \times \cos 22 « = 17.6 {m s}^{- 1} »$ ✓

$time = « \frac{distance}{speed} = \frac{11}{19 \cos 22} = » 0.62 « s »$ ✓

Allow ECF for MP2

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Core

Core » Topic 2: Mechanics » 2.1 – Motion

Core » Topic 2: Mechanics

Question 21M.2.SL.TZ2.b.i

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