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2 Motion and forces

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Question 9

The entries in this operational log for a harbour patrol launch are in time order.

Log entryRecord
AThe launch travels 1.20 km at an average speed of 8.0 m/s.
InspectionThe launch remains stationary for 4.5 minutes.
BThe launch travels 630 m at an average speed of 4.5 m/s.

What is the average speed of the launch for the period covered by the log?

[1]
A

4.2 m/s4.2\ \mathrm{m/s}4.2 m/s

B

3.3 m/s3.3\ \mathrm{m/s}3.3 m/s

C

1.8 m/s1.8\ \mathrm{m/s}1.8 m/s

D

2.5 m/s2.5\ \mathrm{m/s}2.5 m/s

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2 Motion and forces Questions

  1. GCSE
  2. /Physics
  3. /2 Motion and forces

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