Scientific Method
How many steps are there in our scientific method?
4
What is the symbol for speed and velocity?
v
gravity
Scalar quantities are when something has _________ but no direction
magnitude
Anything that is divided by time is known as a ____
Rate
Step 1 is Identify a ________ or a _______ (Need both to earn the points)
Question, Problem
What is the key difference between speed and velocity?
Velocity has direction
What is the value we use for the acceleration due to gravity (number and units must be correct to earn points)
10 m/s2
If 2 vectors are in the same direction, they are _____ together
If 2 vectors are in the opposite direction, they are _____
(Need both to earn the points)
added, subtracted
PE = (Prediction-Actual/Actual) x 100
What must you do to your hypothesis in Step 3?
Test the hypothesis
Write the formula for acceleration
(vf-vi)/t
In free fall, about how much velocity is lost each second as an object goes up or is gained as an object goes down?
10 m/s
Find the resultant of 120 m/s north and 30 m/s south
90 m/s north
Meters is a unit of
Which step of the Scientific Method does this statement most closely match:
I'm able to focus better at school when I get more sleep
Step 4: Interpret the Results
A boat travels a total distance of 60 kilometers north. The entire trip takes 20 minutes. This is the boat's average velocity.
3 km/min north
A bowling ball is dropped and falls for 4 seconds. Find its instantaneous velocity at the fourth second.
v = 40 m/s down
What part of the arrow is used to show the magnitude of a vector?
direction
What is the scientific term for an educated guess?
Hypothesis
A commercial jet touches down on the runway with a velocity of 70 m/s. It slows down uniformly and comes to a complete stop 26 seconds later. Find the jet's average acceleration. (Round to the nearest tenth decimal place)
-2.7 m/s2
Ignoring air resistance, what is the total distance a skydiver falls in the first 7 seconds after jumping from a stationary helicopter.
d = 245 m
Find the resultant of 80 m/s East and 80 m/s West
0 (m/s)
Song!
Title and artist