Speed
What is the formula to calculate speed?
Speed = distance /time
What is empirical eveidence?
Evidence/data from a scientific experiment
what is net force?
Total of all forces acting on an object
What happens when an object experiences an unbalanced force?
Motion
What is physical weathering?
the breaking down of rocks
Speed tells us how _____ and object moves in a certain amount of _______
Fast, time
What is the variable that you change in a scientific experiemnet?
Independent Variable
If the forces acting on an object are acting in the different directions, how do you calculate the net force?
Subtract the values
Is the moon revolving around the earth and example of balanced or unbalanced forces? Why?
Balanced because it remains in constant speed and motion
Draw the line for when an object is not moving on a motion graph
Straight line
A runner runs 5m/s in 80s. What is the distance the runner ran?
400m
Repeating of trials in an experiment by the same individual
How do you deterine the direction of the netforce on an object?
By the larger force value
what happens to an object experiencing a balanced force?
no motion or remains at a constant speed
How would oyu describe the line when it is showing the object moving the fastest
The steepest line
If a car travels 150Km in 3 hours, its speed is ______
50km/hr
Why are models useful in sciennce?
Models allow for scientist to test many different conditions quickly
If the forces acting on an object are acting in the same direction, how do you calculate the net force?
Add the amounts together
Why does an object's motion stop?
Unbalanced forces
Draw the line representing the object returning to start on a motion graph
Line goes down
A toy airplane fly's at a constant speed. In the first 4 seconds it travels 20 meters. How far will the toy airplane fly in the next 6 seconds if it maintains a constant speed? (speed= distance/time)
30 meters
What must be in an experiment that is not in an investigation?
Variables (IV, DV, Control)
Calculate the net force (11)
10N South
What is the unbalanced force acting on a skateboard when riding?
Friction
What value is on the Y axis and the X axis in a motion graph
Y- Distance X-Time