RRHS - Physics - Chapter 04 Review

An action exerted on an object which may change the object’s state of rest or motion defines

• acceleration

• force

• mass

• velocity

Units that measure weight are units of

• acceleration

• force

• mass

• velocity

A force unit is defined as the product of a mass unit and a unit of:

• time

• displacement

• velocity

• acceleration

Which of the following statements describe force diagrams? I. Force diagrams show force vectors as arrows.

II. Forces exerted on the object are represented.

III. Forces exerted by the object are represented.

• I and II

• I and III

• II and III

• I, II, and III

Which of the following statements describe free-body diagrams?

I. Force diagrams show force vectors as arrows.

II. Forces exerted on the object are represented.

III. Forces exerted by the object are represented.

• I and II

• I and III

• II and III

• I, II, and III

The gravitational force exerted on an object would most likely be represented by which force vector?

• ↑

• ←

• ↓

• →

Which of the following situations describes inertia?

• A stationary object tends to resist being moved.

• A moving object tends to resist a change in speed.

• A moving object tends to resist a change in direction.

• all of the above

Which of the following is true of inertia?

• It is described in Newton’s first law of motion.

• It is a property of motion.

• It is measured by weight

• all of the above

Two forces act on an object. The magnitude of the net force acting on the object

• equals the sum of the magnitudes of the two forces.

• equals the difference in the magnitudes of the two forces.

• equals the average of the two forces.

• cannot be determined from the given information.

An object is at rest on an incline. The component of gravity acting downward and along the incline on the object is described as F_g,x = +8.0 N. Which axis is pointing up the incline?

• +x axis

• +y axis

• -x axis

• -y axis