Unit 06

______ is the rate at which an object moves.

speed

What are the units for acceleration?

m/s²

True or FalseMass and

weight mean the same.

False

Who came up with the laws of motion?

Sir Isaac Newton

When using a spring scale, which of Newton’s Laws describes the relationship between the mass and force?

Law of Force and Acceleration

A rocket is traveling from Earth to Jupiter at 10,000 m/s. If no outside force is applied to it, what will happen to its speed over time?

Stay constant

What can cause acceleration?

Speed upSlow downStartStopChange direction

What are the units for mass?

kg kilograms

List Newton’s three laws of motion.

Law of inertiaLaw of force and acceleration

Law of action and reaction

To change speed and direction is known as _____________

acceleration

The speed and direction of an object at a given time is known as its ______

velocity

A force that will work against motion in every situation--

friction

Weight is measured in______.

Newtons (N)

What is the formula for average speed?

S=d/t

F=maWhat does the F stand for?

force

Speed that does not change over time.

Constant speed

When playing tug of war, neither team is able to gain an advantage. Explain the force in this situation.

Balanced force

_______ is the amount of stuff (matter) in an object.

mass

Which law states that an object in motion tends to stay in motion, and an object at rest tends to stay at rest unless an external (unbalanced) force is applied to it?

Law of inertia

When a car suddenly stops, the objects in the back seat are thrown forward. This is due to which law-----

Law of inertia

What is the formula for force?

F=ma

An object with a certain velocity maintains that velocity unless a force acts on it to cause an acceleration. Which law is this?

Law of force and acceleration

You are riding in a vehicle with your baseball cap on the dashboard while traveling 40 km/h. The vehicle makes a sudden stop. What will happen to the baseball cap?

Go forward

Which of Newton’s Laws describes the relationship between the mass and force?

Law of force and acceleration

F=maWhat does the a stand

for?

acceleration

What are the units for force?

Newtons (N)

What is the Law of action and reaction?

For every action, there is an equal and opposite reaction

Objects resist _______ in motion.

change

F=maWhat does the m stand for?

mass

Acceleration is caused by _________ __________

Unbalanced forces

The use of a seat belt in a car and on a roller coaster follows which law?

Law of Action and Reaction

Describe the action and reaction forces of a gymnast performing a flip on the mat.

The gymnast pushes on the mat and the mat pushes back on the gymnast.