Speed
Velocity
Acceleration
Force
friction
100
True/False. Speed can be shown on a graph of time versus distance.
False.
100
Define velocity.
Velocity is the speed of an object in a particular direction.
100
When does an object accelerate?
When the speed, direction, or both change.
100
What is meant by the tern net force?
sum of all forces exerted on an object.
100
What are the 2 major types of friction
static and kinetic
200
What is the formula to finding average speed?
Total distance divided by the total amount of time.
200
Five cars leave a house at the same time, going the the the same speed for 12 miles. Why weren't the velocities the same?
They were going different directions.
200
What is it called when there is a decrease in velocity?
negative acceleration and/or de-acceleration.
200
Give an example of balanced force situation
book sitting on table, car not moving
200
Which type of friction (static or kinetic) requires the larger force to act on it to change the object's position.
static
300
What is the definition of speed?
Speed is the distance traveled by an object divided by the time taken to travel that distance.
300
What does velocity have that speed doesn't?
a direction.
300
Traveling in a circle is an example of this.
what is constant acceleration.
300
If an object has unbalanced forces acting on it, what is the object doing
moving on a vector betw the 2 forces
300
What is rolling friction?
adhesion friction of round surface in contact with another surface
400
What is the average speed of a bike if it goes a distance of 120 miles in 5 hours?
24m/h.
400
What is it called when you add the speed of a plane and the speed of a person walking in the plane?
Combining or resulatant velocity.
400
What is the scientific definition for acceleration?
The rate of which velocity changes.
400
what is force?
action that causes an object to change direction or its position of rest.
400
name 2 ways Friction can be reduced
lube the materials, add rollers
500
What is the amount of time it took if the average speed was 325m/h and the total distance was 1300 miles?
4 hours.
500
A train is going 75m/h and a person in the train is walking towards the front going 2m/h. What is the resultant velocity?
77m/h.
500
give an example of constant acceleration that can be commonly found at an amusement park.
The acceleration that occurs in a circular motion, example at amusement park would be a ferris wheel, or merry-go-round.
500
Look at the drawing, in which direction will the box move?
in vector direction betw the 2 forces and closer to the greater force
500
what is fluid friction?
friction that occurs as an object moves through fluids.
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