Chapter 3: Force and Motion

Front

What is the universal force that exists between all objects in the universe?

Back

Gravity.

Front

According to Newton’s 2nd law of motion, what happens to acceleration when the force applied to an object increases?

Back

Acceleration also increases.

Front

What does Newton's 3rd law state?

Back

For every action, there is an equal and opposite reaction.

Front

What term describes the state of an object when the net force acting on it is zero?

Back

Balanced forces.

Front

If two identical cars collide and the total momentum before the collision is 140,000 kg x m/s, what is the total momentum after the collision?

Back

140,000 kg x m/s.

Front

What is the formula for calculating force according to Newton's 2nd law?

Back

Force = mass x acceleration.

Front

What is inertia?

Back

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

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces result in no change in motion, while unbalanced forces cause a change in motion.

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity.

Front

How is gravitational force affected by distance?

Back

Gravitational force decreases as the distance between two objects increases.