Amplify: Forces & Motion 1-2

Front

What direction must a force act in for an object to speed up?

Back

The force must act in the same direction as the object's motion.

Front

What direction can a force come from to start moving an object?

Back

The force can come from any direction.

Front

What are the two main factors that affect the motion of an object?

Back

The mass of the object and the amount of force applied.

Front

What can scientists do using evidence from a model regarding the motion of objects?

Back

Scientists can infer that one object is moving farther than another.

Front

What happens to an object when a force is applied in the opposite direction of its motion?

Back

The object will slow down.

Front

What is the relationship between mass and force in terms of motion?

Back

Greater mass requires greater force to achieve the same acceleration.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is the effect of balanced forces on an object?

Back

Balanced forces do not change the motion of an object.

Front

What is the effect of unbalanced forces on an object?

Back

Unbalanced forces cause an object to accelerate in the direction of the net force.