Below you will find a set of 5 conceptual and numerical revision questions selected randomly from lots of questions I have put together covering the material in Chapter 3, "Motion in Two and Three Dimensions". There are questions on displacement, the position, velocity and acceleration vectors, and projectile motion. When you have finished the quiz, click on the "Submit Quiz" button at the bottom and within seconds it will be automatically graded and the results returned to you!

To select a new set of questions click on the "Reload" or "Refresh" button on your browser. You may find some of the questions duplicated but that's the nature of a random selection. Try it a few times ... it's not fattening and you may learn something!

Many thanks to Mark Wood for producing the quiz-maker code.

Q1: Two vectors A and B are added together to form a vector C. If the relationship between the magnitudes of the vectors is given by: A + B = C, which one of the following statements concerning these vectors is true?

A and B must be displacements.
A and B must have equal lengths.
A and B must point in opposite directions.
A and B must point in the same direction.
A and B must be at right angles to each other.

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Q2: A projectile is fired at an angle of 45° above the horizontal.

If air resistance is neglected, the line in the graph that best represents the horizontal displacement of the projectile as a function of travel time is

1
2
3
4
None of these is correct

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Q3: An engineering student standing on the edge of a cliff throws a stone vertically downward with an initial speed of 10 m/s. The instant before the stone hits the ground below, it is traveling at a speed of 30 m/s. If the student were to throw the rock horizontally outward from the cliff instead, with the same initial speed of 10 m/s, how fast would the stone be traveling just before it hits the ground?

10 m/s
20 m/s
30 m/s
40 m/s
The height of the cliff must be specified to answer this question.

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Q4: A tennis ball is thrown from ground level with a velocity directed 30° above the horizontal. If it takes the ball 1.0 s to reach the top of its trajectory, what is the magnitude of the initial velocity?

4.9 m/s
9.8 m/s
11.3 m/s
19.6 m/s
34.4 m/s

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Q5: A golfer drives her ball from the tee down the fairway in a high arcing shot. When the ball is at the highest point of its flight,

its velocity and acceleration are both zero.
its velocity is zero but its acceleration is nonzero.
its velocity is nonzero but its acceleration is zero.
its velocity and acceleration are both nonzero.
Insufficient information is given to answer correctly.

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