Physics (AS & A Level) · Oct / Nov 2018 · Paper 12 · Question 6

A sprinter runs a 100 m race. The sprinter has a constant acceleration from rest of 2.5 m s–2 until reaching a speed of 10 m s–1. The speed then remains constant until the end of the race. Which time does it take the sprinter to run the race?

1. A8.9 s
2. B10 s
3. C12 s
4. D14 s

As printed in the paper