Practice Average Speed in Physics

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

Average speed is the total distance traveled divided by the total time taken.

It tells you how fast the trip was overall, not how fast you moved at each moment.

Showing a random 20 of 50 problems.

Example 1

medium
A bus travels 3030 min at 6060 km/h and 3030 min at 2020 km/h. Average speed?

Example 2

easy
A runner covers 55 km in 2525 min. Average speed in km/min?

Example 3

easy
A cyclist's average speed is 15โ€‰km/h15\,\text{km/h} over 2โ€‰h2\,\text{h}. How far did she ride?

Example 4

medium
A car covers three 2020 km legs at 4040, 6060, 120120 km/h. Find the average speed.

Example 5

challenge
A car travels half the distance at 3030 km/h and the other half at 7070 km/h. Find the average speed.

Example 6

easy
A train travels 240โ€‰km240\,\text{km} in 4โ€‰h4\,\text{h}. What is its average speed?

Example 7

challenge
A commuter drives to work at 3030 km/h and back the same route at 6060 km/h. What single constant speed gives the same total time?

Example 8

easy
A car drives a circular track of length 400โ€‰m400\,\text{m} once in 50โ€‰s50\,\text{s} and returns to the start. Find the average speed.

Example 9

easy
A walker goes 3030 m in 1515 s. Average speed?

Example 10

easy
A cyclist's total distance is 2424 km over 22 h. Average speed?

Example 11

medium
A jogger runs 33 km in 2020 min. Average speed in km/h?

Example 12

easy
A round trip covers 400400 m of path in 100100 s but ends at the start. Average speed?

Example 13

medium
A car drives 60โ€‰km60\,\text{km} at 30โ€‰km/h30\,\text{km/h}, 60โ€‰km60\,\text{km} at 60โ€‰km/h60\,\text{km/h}, and 60โ€‰km60\,\text{km} at 90โ€‰km/h90\,\text{km/h}. Find the average speed.

Example 14

medium
A bus drives 40โ€‰min40\,\text{min} at 30โ€‰km/h30\,\text{km/h}, then 20โ€‰min20\,\text{min} at 60โ€‰km/h60\,\text{km/h}. Find the average speed.

Example 15

medium
A jogger runs 5โ€‰km5\,\text{km} in 25โ€‰min25\,\text{min}. Find her average speed in km/h.

Example 16

medium
A car goes around a 1โ€‰km1\,\text{km} track in 90โ€‰s90\,\text{s}. Find the average speed in m/s.

Example 17

medium
A runner does 400โ€‰m400\,\text{m} in 80โ€‰s80\,\text{s} and then walks 200โ€‰m200\,\text{m} in 120โ€‰s120\,\text{s}. Find the average speed for both segments together.

Example 18

easy
A swimmer averages 1.2โ€‰m/s1.2\,\text{m/s} over 300โ€‰m300\,\text{m}. Find the time.

Example 19

hard
A car drives 1โ€‰h1\,\text{h} at 80โ€‰km/h80\,\text{km/h}, 2โ€‰h2\,\text{h} at 50โ€‰km/h50\,\text{km/h}, and 1โ€‰h1\,\text{h} at 30โ€‰km/h30\,\text{km/h}. Find the average speed.

Example 20

easy
A trip is 6060 km in 1.51.5 h. Average speed in km/h?