Distance-time graphs
2 marks · NormalA dog runs 150 metres in 25 seconds. Calculate the average speed of the dog in m/s. Give your answer to 2 decimal places.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
6.00 m/s (±0.01)
Also accept: 6; 6.0
Common mistakes: using minutes instead of seconds
Show mark scheme and worked solution
Marking points
M1 · 1 mark · Correct substitution into the speed formula.
A1 · 1 mark · Correct answer to 2 decimal places: 6.00 m/s.
Worked solution
Average speed = distance / time = 150 m / 25 s = 6.00 m/s