Formulas
This formula is used to calculate density.
What is mass ÷ volume?
Newton’s First Law also called this.
What is the Law of Inertia?
A 10 N force applied to a 5 kg object produces this acceleration.
What is 2 m/s²?
This is Newton’s Third Law stated simply.
What is “For every action, there is an equal and opposite reaction”?
This is the main difference between speed and velocity.
What is direction?
The formula for speed is this.
What is distance ÷ time?
This is why passengers lurch forward when a bus stops suddenly.
What is inertia (An object in motion wants to stay in motion)?
If you double the mass of an object while keeping the force the same, this happens to the acceleration.
What is it is cut in half?
When you jump off a small boat, this happens to the boat.
What is it moves backward?
A runner travels 100 m in 20 s. Their speed is this.
What is 5 m/s?
This is the formula for Newton’s Second Law.
What is F = m × a?
This property of an object determines how much inertia it has.
What is mass?
This is the metric unit of force.
What is a Newton?
This is the reaction force when a rocket pushes gases downward.
What is the gases push the rocket upward?
A bike increases velocity from 4 m/s to 12 m/s in 2 s. This is its acceleration.
What is 4 m/s²?
This is the formula for Velocity
What is displacement ÷ time.
This explains why a soccer ball eventually stops rolling, even though Newton’s First Law says objects in motion stay in motion.
What is friction (an unbalanced force)?
A 50 N force accelerates a cart at 10 m/s². This is the cart’s mass.
What is 5 kg?
Describe the action and reaction forces when a swimmer pushes water backward during a race.
The action force is you moving the water behind you and the reaction force is the water pushing you forward
On a distance–time graph, a horizontal line means this.
What is no motion (the object is at rest)?
The formula for acceleration is this.
What is (final velocity - initial velocity) ÷ time
This is why a magician’s dishes when they pull the tablecloth quickly.
What is inertia (an object at rest wants to stay at rest)?
A car with a mass of 1,000 kg accelerates from rest to 20 m/s in 10 seconds. Using Newton’s Second Law, calculate the net force acting on the car.
What is 2,000 N?
Describe the action and reaction forces when you kick a soccer ball.
The action force is you kicking the ball and the reaction force is the ball pushing back on your foot.
On a velocity-time graph, an upward sloping line means this.
What is the object is accelerating?