Newton's Laws True/False

Balanced and Unbalanced Forces

1a. If a person is moving to the right, then the forces acting upon it are NOT balanced.

• True

• False

Answer explanation

A person can be moving with constant velocity without any forces acting.

Balanced and Unbalanced Forces

1b. A balance of forces is demonstrated by an object which is slowing to a stop.

• True

• False

Answer explanation

An object slowing to a stop is accelerating. There must be unbalanced forces.

Balanced and Unbalanced Forces

1c. It would take an unbalanced force to keep an object in motion.

• True

• False

Answer explanation

Balanced and Unbalanced Forces

1d. If an object is moving with a constant speed in a circle, then the forces acting upon the object are balanced.

• True

• False

Answer explanation

Changes direction so it must have unbalanced forces.

Balanced and Unbalanced Forces

1e. If an object is accelerating at a constant rate of acceleration, then the forces acting upon the object are balanced.

• True

• False

Newton’s Laws of Motion

2a. Newton's first law of motion is applicable to both moving and non-moving objects.

• True

• False

Newton’s Laws of Motion

2d. A pendulum is set into its usual back-and-forth periodic motion. After some time (perhaps 10 minutes), the pendulum bob comes to a rest position. This is best explained by the idea of inertia - all objects eventually resist motion.

• True

• False

Newton’s Laws of Motion

2e. It would take an unbalanced force to cause an object to accelerate from rest.

• True

• False

Force

3a. A force is a push or pull exerted upon an object which results from the interaction of that object with its environment.

• True

• False

Force

3b. If a football is moving upwards and rightwards towards the peak of its trajectory, then there are both rightwards and upwards forces acting upon it.

• True

• False