Newton's Laws of Motion

Multiple Choice

The most influential scientist that is still recognized is Sir Isaac Newton.

• True

• False

Multiple Choice

The lower the mass, the greater the inertia.

• True

• False

Multiple Choice

The greater the speed, the greater the inertia.

• True

• False

Open Ended

Why are airbags in cars important during head on collisions? Explain this using Newton's 1st Law of Motion.

Multiple Choice

Why does it take a semi truck longer to come to a complete stop even though both vehicles were moving at the same speed?

• The mass of the truck is much greater than the mass of the car.

• The mass of the car is much greater than the mass of the truck.

• Because both cars were maintaining the same constant velocity.

Multiple Choice

If the force acting on the object stays the same but the mass increases, what is most likely to happen to the acceleration of the object?

• Velocity will change but the speed and direction will remain constant.

• Acceleration will increase

• Acceleration will decrease

Open Ended

Why is the relationship between the force on an object and the object's acceleration? Please use complete sentences related to Newton's 2nd Law.

Multiple Choice

Which best explains why we are able to accelerate forward when starting to run?

• As one leg moves backward, it provides an equal and opposite force for the other foot to move forward.

• The striking foot pushes backward against the ground. The friction with the ground provides an equal and opposite force forward.

• The foot not touching the ground propels the entire body as it swings forward.

Multiple Choice

When you step on a roach, the roach applies an equal and opposite force on your foot as your foot applies to the roach.

• True

• False

Open Ended

Why do objects fall towards Earth? Please explain in complete sentences using Newton's 3rd Law of Motion.

Open Ended

What are the laws that govern motion in the universe?

Please make sure to answer in at least 3 complete sentences and thoroughly.

Poll

How confident are you with Newton's 3 Laws of Motion?

• Great - Newton's Laws are cool

• Okay - I kinda get Newton's Laws & forces but need more time

• Horrible - Who is Newton? What is a law?