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Chapter 11
Chapter 9
Chapter 9 velocity
Chapter 10
Chapter 10 Momentum and Gravity
100
What is density and what is the formula?
Mass per unit of volume The formula of density is density=mass/volume
100
If an object is in motion, then what can you say about the object?
That it's distance from another object is changing
100
What is velocity?
Speed in a given direction.
100
What is force and what is it measured in?
A push or pull on an object. Newtons (N)
200
How is the amount of matter in an object measured?
the mass
200
What is one thing you can use to determine if an object is in motion?
A reference point
200
What is slope?
Rise/run ratio of a graph
200
What is a net force?
The combination of all forces acting on an object
300
What 2 things determine if an object floats or sinks? What is buoyancy?
Buoyancy and Density. An opposite force of water.
300
What is displacement?
The length and direction an object has moved from a reference/starting point
300
What is acceleration? What is deceleration known as?
the rate at which velocity changes. The process of an object slowing down or stopping.
300
What is the difference between balanced and unbalanced forces?
Unbalanced forces means that the velocity is changing and balanced forces means that the direction/velocity isn't changing.
300
What is weight and what is the formula for weight?
The gravitational force exerted on a person or object at the surface of the planet. weight=mass*acceleration due to gravity.
400
How do you measure the amount of space an object takes up?
By measuring the volume
400
What is a vector?
A quantity with magnitude and direction, one example is displacement.
400
What is the formula for acceleration?
Final velocity-initial velocity/time
400
What is friction?
Friction is a force that 2 surfaces exert on each other.
400
What are free fall and air resistance?
When the only force action on an object is gravity. A fluid friction that acts on objects falling through air.
500
What is speed? What is average speed? What is instantaneous speed?
distance/time. total distance/total time. speed at a given instant.
500
What is the formula for velocity?
distance/time in a direction
500
What are the 4 types of friction and what do they all do?
Static Friction is caused when you first try to move an object. Sliding friction happens when 2 solid surfaces slide over each other. Rolling friction happens when an object rolls across a surface. Fluid friction happens when a solid object moves through fluid.
500
What are compression and tension?
An elastic force that squeezes or pushes matter together. An elastic force that stretches or pulls matter.