Lesson 1
An image shows a car traveling down a road. From what reference point does the dog appear to NOT be moving?
The car, the dog, etc.
To calculate the speed of an object you use the formula ________.
Distance/Time
What is Newton's First Law of Motion?
An object at rest remains at rest unless acted upon by a nonzero net force.
When an object rolls across a surface, ______ occurs.
Rolling Friction
A push or pull is a ______.
force
To calculate AVERAGE speed you use the formula ________.
Total Distance/Total Time
Resistance to change in motion is called _____.
Inertia
_________ occurs when a solid object moves through a fluid.
Fluid Friction
A roller coaster is in motion relative to ______, and stationary relative to _______.
Roller coaster tracks/Passengers on roller coaster.
The angle of a line on a graph is called ________.
Slope
To calculate the net force of an object you use the formula __________.
Mass X Acceleration
What is the weight of an object?
The measure of the force of gravity on an object.
Which force would cause a change in motion, a bird sitting atop an elephant, a horse pulling a man in a buggy, or a cat trying to push a great dane?
A horse pulling a man in a buggy.
A cheetah travels 100 meters in 4 seconds. What is its average speed per second?
25 m/s
What is Newton's Second Law of Motion?
An object's mass directly affects how much force is needed to accelerate the object.
How do you calculate GPE (Gravitational Potential Energy)?
Mass X Acceleration due to gravity X Height