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Question 21N.2.SL.TZ0.1d.ii

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Date November 2021 Marks available [Maximum mark: 1] Reference code 21N.2.SL.TZ0.1d.ii
Level SL Paper 2 Time zone TZ0
Command term Suggest Question number d.ii Adapted from N/A
d.ii.
[Maximum mark: 1]
21N.2.SL.TZ0.1d.ii

A ball of mass 0.250 kg is released from rest at time t = 0, from a height H above a horizontal floor.

The graph shows the variation with time t of the velocity v of the ball. Air resistance is negligible. Take g = −9.80 m s−2. The ball reaches the floor after 1.0 s.

(d.ii)

Suggest why the momentum of the ball was not conserved during the collision with the floor.

[1]

Markscheme

there is an external force acting on the ball

OR

some momentum is transferred to the floor ✓


Allow references to impulse instead of force.
Do not award references to energy.

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