Lesson 1
A force is a _________ or __________.
What is a push or pull?
The _______ of an object is the distance the object moves per unit of time.
What is speed?
An object at rest stays at rest unless acted on by an outside force
What is Newton's first law of motion?
Example of rolling friction.
What is a skateboard rolling along the sidewalk?
(OR any wheeled object)
Chemicals and resources made by humans
What are synthetic materials?
ONE of the two types of classification of force
What is contact and non contact force?
The rate at which velocity changes is _________.
What is acceleration?
Size and direction of the net force equals the mass times acceleration
What is Newton's second law of motion?
When you dive into a pool this is an example of
What is fluid friction?
A ____________ is anything that occurs naturally in the environment that humans use
What are natural resources?
Example of non contact force
What is gravity?
Velocity can involve a change in __________.
What is speed and direction?
For every action there is an equal and opposite reaction
What is Newton's third law of motion?
When two solid surfaces slide across each other, _________ occurs
What is sliding friction?
Example of naturally occurring fibers
What is cotton OR wool OR silk?
Two teams are playing tug-o-war with 3 people on each side. This is an example of _________ forces.
What is balanced forces?
Formula for acceleration
What is final speed - initial speed / time?
Resistance to change in motion is __________.
What is inertia?
Imagine you see a person standing on the 10th floor of a building and another person standing on the 3rd floor. Which person has more gravitational potential energy?
Who is the person on the 10th floor?
Example of synthetic fibers
What are acrylic OR nylon OR polyester OR spandex OR rayon?
Suppose you are sitting at the beach on your beach towel and you are using the sun as a reference point. Relative to the sun, _____________, but relative to the Earth, ____________, so you do not feel as if you are in motion.
What is you are moving, you are sitting still?
The three factors that involves acceleration
What is increase speed, decrease speed, change in direction?
Complete the sentence. In order for forces to __________, they must act on the _______ object.
What is balanced, same?
The two factors that control the strength of gravitational force between two objects
What is the mass of the object and location of the object?
We talked about a plant called Digitalis lanata. Chemists have isolated and synthesized the compound called ____________.
What is digoxin?