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Problems with detailed solutions on velocity and speed of moving objects.


Problem 1: A man walks 7 km in 2 hours and 2 km in 1 hour in the same direction.

a) What is the man's average speed for the whole journey?

b) What is the man's average velocity for the whole journey?

Solution to Problem 1


Problem 2: A man walks 7 km East in 2 hours and then 2.5 km West in 1 hour.

a) What is the man's average speed for the whole journey?

b) What is the man's average velocity for the whole journey?

Solution to Problem 2


Problem 3: You start walking from a point on a circular field of radius 0.5 km and 1 hour later you are at the same point.

a) What is your average speed for the whole journey?

b) What is your average velocity for the whole journey?

Solution to Problem 3


Problem 4: John drove South 120 km at 60 km/h and then East 150 km at 50 km/h. Determine

a) the average speed for the whole journey?

b) the magnitude of the average velocity for the whole journey?

Solution to Problem 4



Problem 5: If I can walk at an average speed of 5 km/h, how many miles I can walk in two hours?

Solution to Problem 5


Problem 6: A train travels along a straight line at a constant speed of 60 mi/h for a distance d and then another distance equal to 2d in the same direction at a constant speed of 80 mi/h.

a)What is the average speed of the train for the whole journey?

Solution to Problem 6


Problem 7: A car travels 22 km south, 12 km west, and 14 km north in half an hour.

a) What is the average speed of the car?

b) What is the final displacement of the car?

c) What is the average velocity of the car?

Solution to Problem 7


Problem 8: A man walked from point A to F following the route in the grid below in 3250 seconds. Determine

velocity and speed - Problem 8
a) the average speed, in m/s, for the whole journey.

b) the magnitude of the displacement.

c) the magnitude of the average velocity, in m/s, for the whole journey.
Solution to Problem 8



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Updated: 26 September 2015

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