Skill Set 4: ALL

Front

What is Newton's 1st Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Front

What is Newton's 2nd Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. (F = ma)

Front

What is Newton's 3rd Law of Motion?

Back

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

Front

What is the formula to calculate force?

Back

Force (F) = mass (m) × acceleration (a)

Front

If a cart has a mass of 15 kg and accelerates at 2 m/s², what is the net force acting on it?

Back

30 N (F = ma = 15 kg × 2 m/s²)

Front

What does it mean when we say a truck requires more force to start moving than a car?

Back

It means that the truck has a greater mass, which requires a larger force to overcome inertia and start moving.

Front

What is inertia?

Back

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

Front

How do you calculate the force of friction if the net force is zero?

Back

If the net force is zero, the force of friction is equal to the applied force.

Front

What is the relationship between mass and acceleration in Newton's 2nd Law?

Back

As mass increases, for a constant force, acceleration decreases.

Front

What is an example of Newton's 3rd Law in everyday life?

Back

When you jump off a small boat, you push the boat backward as you move forward.