Chapter 1 Material
The metric unit of length?
meter
If a reference frame is not provided it is safe to assume ____________ is the reference frame
earth
What is the formula for speed?
speed = distance/time
The Indy 500 track is 4km in distance. What would a drivers distance and displacement be after 2 laps?
distance 8km 8000meters
displacement= 0
It is said you can outrun a deer if you are able to run what distance? (in miles)
10 miles
the metric unit of time?
seconds
the study of motion?
kinematics
what is the formula for velocity?
velocity = displacement/time
A pitcher throws a ball 18 meters with a speed of 40m/s how long did it take?
time=distance/speed
18 m divided by 40 m/s = .45 seconds
Which is greater; the number of stars in milky way galaxy or the number of bacteria living in your colon (large intestine)
100 million stars in milky way
100 billion bacteria in colon
the metric unit of mass?
kilogram
a quantity of magnitude only
scaler
What is this symbol and what does it mean?
Δ
Delta change in
speed= distance/time
200/150= 1.33 m/s
When was the first successful electric car built in the U.S.?
1890 by chemist William Morrison
metric unit of volume?
liter
a quantity with magnitude and direction
vector
What symbol is used to represent a vector?
arrow
a trucker drives along a straight highway for .5 h with a displacement of 30 km South. What is the truckers velocity?
30km/.5h= 60km/h South
how many bones does a newborn baby have?
300
set of investigative procedures scientists use
scientific method
how quickly an object changes location
speed
What does the slope represent on a position time graph?
velocity
What does the slope represent on a velocity time graph?
acceleration
How many human cells does the body make every second?
25
25 million