Motion is the change in position of an object with respect to time.
100
What is force?
Force is a push or pull on an object.
100
How many centimeters are in a meter?
100 cm
100
What is Newton's First Law of Motion?
An object at rest will stay at rest unless acted upon by an unbalanced force. An object in motion will stay in motion with the same speed in the same direction unless acted upon by an unbalanced force. This law is also known as the "law of inertia."
100
Name two types of simple machines.
Answers vary among wheel and axle, pulleys, inclined planes, and levers.
200
What is a reference point?
A reference point is a place or object used for comparison to determine if something is in motion.
200
What are the units of measurement for force, work, and power?
The unit of measurement for force is a newton. The units for work are joules, and the units for power are watts.
200
How many seconds are in an hour?
3600 seconds.
200
What is Newton's Second Law of Motion?
Acceleration is produced when a force acts on a mass. The greater mass of the object being accelerated the greater the force needed to accelerate the object. This law is also know as the "law of motion," and can be represented by the formula F=ma.
200
What are two other types of simple machines that are technically inclined planes?
Screws and wedges.
300
What is the difference between speed and velocity?
Velocity is speed in a given direction. Velocity is a vector while speed is a scalar.
300
What is the formula for work?
Work = Force x Distance
300
What do we call the fraction we multiply by to eliminate unwanted units in a rate problem?
Conversion factor
300
Give an example of Newton's First Law of Motion in action.
Answers vary.
300
Give an example of a pulley.
Answers vary.
400
What are the standard units for acceleration?
Meters per second per second, or meters per second squared.
400
If I lift a 10 N box 3 meters into the air, how much work have I done on the box?
30 joules of work
400
Convert 6000 cm/min into m/sec.
1 m/sec.
400
What is Newton's Third Law of Motion?
For every action there is an equal and opposite reaction. This law is also known as the "law of force pairs."
400
At the end of a race you increase your speed from 5 m/s to 13 m/s over the course of 2 seconds. What was your acceleration for that 2 second span?
4 m/s/s
500
What is the formula for acceleration?
(Final speed - initial speed) / time
500
If I push a 20 N bicycle 10 meters in 20 seconds, how much power have I exerted on the bicycle?
10 watts of power
500
Convert 180 m/sec/min into m/sec/sec.
3 m/sec/sec
500
The video clip with the newscaster kicking soccer balls was illustrating which of Newton's Laws of Motion.
Newton's Second Law. F=ma
500
You lift a 5 kg load with an acceleration of 2 m/s/s up a 3 meter flight of stairs in 10 seconds. How much power have you exerted?