Measuring instantaneous speed practical (v = x ÷ t)

12 questions

1. Izzy rode her bike for 3 hours and travelled 45 kilometres. What was her average speed?
2. Lucas rides his bike for 4 hours with an average speed of 15 km/h. He travelled at a speed of 10 km/h for the first two hours.What speed must he have been travelling at for the last two hours?
3. Which of the graphs shows an object moving with increasing speed (accelerating)?
4. Andeep ran 20 metres in 5 seconds then slowed down and walked 5 metres in the next 5 seconds. What was his average speed for the first 5 seconds?
5. Andeep ran 20 metres in 5 seconds then slowed down and walked 5 metres in the next 5 seconds. What was his average speed for the whole 10 seconds?
6. Aisha cycles to school three days in a row. Her speeds are shown on the bar chart. What is her average speed for the journey to school?
7. Match the key words or phrases to their definitions.
8. Which of these statements about instantaneous and average speed is correct?
9. A student investigates the relationship between the steepness of a ramp and the instantaneous speed of a trolley at the end of the ramp. Which of these are control variables for the investigation?
10. A trolley rolls down a ramp and passes between two markers that are 20 cm apart in a time of 0.25 s. Calculate the speed of the trolley in m/s.
11. A pupil collects the following set of timing data for a moving object: 0.25 s, 0.23 s, 0.35 s, 0.22 s, 0.21 s.Which calculation should the pupil use to find the mean time?
12. A trolley rolls down a ramp passing between two markers, 0.20 m apart. The following results are collected: 0.17 s, 0.18 s, 0.17 s, and 0.20 s.Calculate the mean instantaneous speed for the trolley.

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