Show:
Measurement
Speed
Displacement
Velocity
Acceleration
100
True or False: Speed is a scalar quantity that has both magnitude and direction.
False
100
What is the average speed of a camel that runs 200 km in 10 seconds? Convert your answer to m/s. (1m = 1000km)
20,000 m/s
100
During a 10 minute period, a spider crawls in a straight line along the edge of a meter stick from the 13 cm mark to the 75 cm mark. What is the displacement of the spider during this time?
62 cm
100
A friend’s house is 3869 m east from your house. If you drive straight east and arrive at your friend’s house 154 s later, what is the average velocity of your trip?
25.12 m/s east
100
While traveling along a highway a driver slows from 55m/s to 20 m/s in 7 seconds. What is the automobile’s acceleration?
5 m/s2
200
What are the standard units for acceleration
m/s2
200
If it takes you3 hours to reach Austin which is 300 miles away, are you breaking the speed limit? (speed limit=80mi/h). Explain your reasoning.
Yes. 300mi/3hr = 100. 100 mph is greater than 80 mph
200
You walk exactly 190 steps East, turn around, and walk exactly 243 steps West. Then, you walk 50 steps east. What is your displacement?
3 steps West
200
How many hours will it take you to walk a distance (displacement) of 6755 m north if your average velocity is 4.67 m/s north? (1 minute = 60 seconds, 1hour = 60 minutes)
.402 hrs
200
A skateboarder increases her velocity from 9.0 m/sec to 12.5 m/sec in 4.0 seconds. What is her acceleration?
.875 m/s2
300
Distance/ time is the equation for: _______
speed
300
A car is traveling at 35.0 m/s. It slows to a stop at a constant rate over 7.00 s. How far does the car travel during those 7.00 seconds before it stops?
245 m
300
It took Mr. Martinez 40 minutes to drive from school to the football game which is 45 miles away. When he reached the football game, he realized he forgot his wallet and returned to school. What was his displacement?
0mi
300
After an object moves for 92.0 s, its x displacement is 105 m. After moving for a total of 108.0 s, the x displacement of the same object is 153 m. What is the average velocity of the object in the x direction during the period of time between 92.0 s and 108.0 s?
3 m/s
300
The Mustang GT convertible can accelerate from 0.0 km/hr to 100 km/hr in3.0 seconds. What is theacceleration of this car? Give your answer in units of kilometers per hour/sec.
3.33 km/hr/s
400
Provide an example of an equation where “∆” is used.
v = ∆x/ t or a = ∆v/∆t
400
You are driving in your car and will run out of gas in 65 minutes. The closest gas station is 149 miles away. If the speed limit is 70 mph, will you make it to the gas station before your gas runs out? Show your work
No, 1.08hr x 70 mph = 75.83 mi
400
It took Mr. Martinez 40 minutes to drive from school to the football game which is 45 miles away. When he reached the football game, he realized he forgot his wallet and returned to school. t: What was his distance?
90 mi
400
What is the displacement of a truck that travels to the left at 80 m/s for 100 seconds?
8000 m
400
How long does it take a car to accelerate to 100 m/s2 if if it can increase its velocity by 60 m in 1 s.
0.6 secs
500
What does the symbol “∆” stand for? Extra point: From what alphabet does the symbol originate?
“∆” stands for the change in something. It comes from the Greek alphabet. It is the Greek letter, delta .
500
A cheetah runs 4 times faster than a cow which runs 30m in 5 s. How long will it take the cheetah to run 30m?
Cow = 6m/s Cheetah = 24 m/s 30m/24m/s = 1.25s
500
What is the equation for finding displacement? (1 person can answer)
final position - initial position
500
Write down the following: units for velocity: Equations: v = x = t =
m/s v = d/t x = v x t t = x/v
500
You are driving down the highway at a velocity of 75.0 mph, north when you press the gas pedal to 90 mph, north in order to pass another car. What is the acceleration of this car if this increase in velocity occurs over a time period of 12.00 seconds?
0.0033mi/hr2