Definitions
The rate at which velocity changes.
What is acceleration?
Speed is the rate of change in position.
True.
To skate 200 m in 40 sec, a skater must average a speed of ...
5 m/s
A constant velocity means acceleration is?
0!
Speed limit on I-94 in MN?
70 mph
Speed & direction.
What is velocity?
Ebnet's house is the the most common frame of reference (reference point).
False. Ebnet's house is where all the neighborhood dogs gather, though.
A car travels at a velocity of 40 m/s. How long will it take the car to travel 240 m?
6 s
2 ways of saying slowing down...
Speed limit on I-94 in North Dakota?
75 mph
m/s/s or m/s2.
What are acceleration units?
Whenever there is a change in velocity, acceleration must be something other than zero.
True
Name the fast cartoon mouse.
"Speedy" Gonzalez
Velocity 2: 20 m/s at 20 sec. Velocity 1: 30 m/s at 10 sec. Acceleration?
-1 m/s/s
Speed limit on I-90 in South Dakota?
80 mph
What does the slant/slope of a speed graph tell you?
The speed itself! How much distance is covered per unit time. Rise over the run, etc.
To slow down & obey a stop sign a driver must engage in positive acceleration.
False
Name the movie in which a bus cannot slow down or it will explode.
Speed
Speed at 10 seconds into the race is 42 mph. Speed at 25 seconds into the race is 42 mph. Calculate acceleration.
0!
Speed of sound in mph?
767 mph
The amount of space an object takes up; and provide a viable unit for this term.
What is volume? & cm3, mL, cc.
When calculating acceleration, the final velocity is always greater than the initial velocity.
False
Name the movie: "I feel the need, the need for speed!"
Top Gun
Velocity 2: 380 km/hr at hour 2. Velocity 1: 220 km/hr at hour 1. Acceleration?
160 km/hr/hr.
Common commercial flight speed (on an airplane at 30,000 ft)?
550 mph