DP Physics (first assessment 2025)

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Question SPM.1A.HL.TZ0.9

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Date May Specimen-2023 Marks available [Maximum mark: 1] Reference code SPM.1A.HL.TZ0.9
Level HL Paper 1A Time zone TZ0
Command term Question number 9 Adapted from N/A
9.
[Maximum mark: 1]
SPM.1A.HL.TZ0.9

A spacecraft, moving with speed v relative to Earth, passes Earth on its way to a planet. As the spacecraft passes Earth, clocks on Earth and in the spacecraft show zero.

The planet is a distance D from Earth, according to an observer on Earth.

What are the readings on the Earth clock and on the spacecraft clock when the spacecraft arrives at the planet?

[1]

Markscheme

A

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