Vocabulary Words
A push or a pull on an object that can cause a change in motion.
Force
What is the unit for speed?
meters per second
In a distance - time graph, what does a positive (upward) slope mean?
Moving away from home
When the object or person is at a stop, what happens to the time?
The time continues on / The time goes on
What does kj stand for?
Kilajoules
The SI unit of measurement for energy?
Joule
Who invented the Laws of Motion?
Sir Isaac Newton
The rate at which an object moves, equal to the distance traveled per time interval.
Speed
_________ is any information that supports or refuses a claim.
Evidence
A horizontal line represent which axis?
x axis
The energy an object has because of its motion.
kinetic energy
What does it take to change the direction or speed of an object?
a. more than one force
b. an unbalanced force
c. a balanced force
d. no force
b. an unbalanced force
How many joules are in 1 kilojoule (kJ)?
1,000 joules
When the mass of an object doubles, what happens to the object’s kinetic energy?
The objects kinetic energy also doubles
In a speed - time graph, a curved line means a change in _______?
Speed
The amount of matter in an object.
mass
What is the formula for speed?
Speed = Distance/Time
How many laws of motion are there?
There are three laws of motion, known as Newton's laws of motion.
What is a car's speed in m/s if it travels 5 m in 0.1 s?
50 m/s
A steeper slope indicates a ______?
a faster speed
Someone who uses science and tools to build a product that solves a practical problem.
Engineer
A bird flies 50 meters in 10 seconds. What is its speed?
a. 0.2 seconds per meter
b. 0.2 meters per second
c. 5 seconds per meter
d. 5 meters per second
d. 5 meters per second
What causes an object to change direction?
A force acting on the object
A desirable outcome given up to gain another desirable outcome.
Trade-Off
F=MA stands for ?
Force equals mass times acceleration