Chapter 1

SI unit for mass: kg

Scalar quantities can be added to other quantities using rules of ordinary addition.

What is the angle between the vectors A and -A when they are drawn from a common origin?

• 180°

Which one of the following statements concerning vectors and scalars is false?

• A vector that is zero may have components other than zero.

Chapter 2

For which one of the following situations will the path length equal the magnitude of the displacement?

• A ball is rolling down an inclined plane.

What is the average speed of the car for one complete lap? \dfrac{2\pi r}{t}

In which one of the following situations does the car have a westward acceleration?

• The car travels eastward and slows down.

In which one of the following cases is the displacement of the object directly proportional to the elapsed time?

• a ball rolls with constant velocity

Starting from rest, a particle confined to move along a straight line is accelerated at a rate of 5.0 m/s2.

• The speed of the particle increases by 5.0 m/s during each second.