Motion
An object is in motion if it changes position relative to this.
What is a REFERENCE POINT?
What is the formula for speed?
Speed = Distance / Time
What is the formula for acceleration?
Acceleration = Final Velocity -Initial Velocity / change in time with a direction
The definition for force.
What is PUSH OR PULL?
If a ball rolls across a table with 10 N of force and experiences 10 N of friction, are the forces balanced or unbalanced?
What is BALANCED?
This is the metric unit for length.
What is METER?
How is speed different from velocity?
velocity needs a direction
What are three ways we can tell if something is accelerating?
speeding up slowing down changing direction
The sum of all forces acting on an object.
What is NET FORCE?
If an object is sitting still, are the forces acting on the object balanced or unbalanced?
What is BALANCED?
What is the difference between distance and displacement?
What is DIRECTION?
A porcupine moved toward a pond at a speed of 5 m/s. It took him 8 seconds. What was the distance he traveled?
40 meters
What force causes everything on Earth to accelerate towards the ground?
What is GRAVITY?
This is the force of gravity on an object's mass.
What is WEIGHT?
The average speed of a car that traveled 10 meters in 10 minutes, then stopped for 20 minutes, then continued 30 meters in 10 minutes.
What is 10 METERS PER MINUTE?
If the relative position of a diver is being described as below a certain reference point midway through a dive, what reference point is most likely being used?
What is THE DIVING BOARD?
Distance = 20 meters Time = 4 minutes Direction = south What is the velocity of this object?
5 m/s south
Acceleration occurs when forces acting on an object are...
What is UNBALANCED?
If Joe and Carol are both pushing a box with 30 N to the left, what is the net force acting on the box?
What is 60 N?
This is speed with direction.
What is VELOCITY?
Shauna has just climbed the steps of the metro bus. She begins walking 10 meters to the back of the bus at a constant speed of 2 miles per hour. At the same time, the bus begins moving forward at a constant speed of 2 miles per hour. What reference point has Shauna not moved compared to?
What is THE EARTH?
An object travels 25 meters in 2 seconds east. What is it's velocity?
12.5 m/s east (must include direction!)
This is why the moon is still considered to be accelerating, even if it moves at a constant speed around the Earth.
What is CHANGING DIRECTION?
This type of fluid friction acts on objects falling through the air.
What is DRAG?
You calculate this by dividing the total distance by the total time.
What is AVERAGE SPEED?