# A delivery drone takes off vertically from rest and accelerates upwards. After several seconds, the drone reaches a constant height and hovers in place. Describe the motion of the drone during these two stages, referring to the drone's velocity and acceleration in each stage.

> Edexcel GCSE Physics (1PH0) — 2.1 Motion · Describe · 4 marks

> A delivery drone is used to transport small parcels. The drone takes off vertically from a rooftop launch pad, accelerates upwards, and then hovers at a fixed height before descending to deliver its parcel.

## Mark scheme (4 marks)

1. During the first stage, the drone's velocity increases (from zero / from rest)
2. During the first stage, the drone has a (positive / non-zero) acceleration
3. During the hovering stage, the drone's velocity is constant / zero (accept either: constant at a fixed height means zero vertical velocity)
4. During the hovering stage, the acceleration is zero

## Key terms

- [velocity](https://www.gradenine.co.uk/glossary/velocity)
- [acceleration](https://www.gradenine.co.uk/glossary/acceleration)

## Related

- [Revision notes for Edexcel GCSE Physics (1PH0)](https://www.gradenine.co.uk/learn)
- [How to answer "Describe" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
- [Practice this with AI marking (free)](https://www.gradenine.co.uk/start)

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Source: [GradeNine](https://www.gradenine.co.uk/q/a-delivery-drone-takes-off-vertically-e742e528) · Published by Druglandscape Ltd.