Why 103 week 2

What does the speedometer of an automobile read?
A) accelerated speed.

B) average speed.

C) instantaneous speed.

Instantaneous speed.

What two measurements are necessary for calculating average speed?

a.	velocity and distance.
b.	distance and acceleration.
c.	velocity and time.
d.	distance and time.
e.	acceleration and time

Distance and time.

If you walk at an average speed of 2 m/s for 5 seconds, how far will you travel?

a.	20 m.
b.	10 m.
c.	2 m.
d.	15 m.

10 meters.

What is the average speed of a horse that gallops 10 kilometers in 0.5 hours?

a.	40 km/h.
b.	15 km/h.
c.	30 km/h.
d.	20 km/h.

20 km/h.

What is the acceleration of a cart that maintains a constant velocity of 100 m/s for 10 seconds?

a.	zero.
b.	1 m/s2.
c.	10 m/s2.
d.	none of the above

Zero.

A scalar quality is fully described by:

a.	both its displacement and its velocity
b.	magnitude alone
c.	both its magnitude and its direction

A quantity that is fully described by magnitude alone.

A vector is fully described by:

a.	both its displacement and its velocity
b.	magnitude alone
c.	both its distance and its speed
d.	both its magnitude and its direction

A quantity that is fully described by both its magnitude and its direction.

Which statement is NOT TRUE when comparing distance and displacement?

a.	Both distance and displacement measure how far an object is from the starting point.
b.	Distance measures to total length traveled, including all turns, while displacement only includes the distance from the starting point.
c.	Distance is a scalar quantity and displacement is a vector quantity, meaning it has direction.
d.	Both distance and displacement measure how far an object has traveled.

Both distance and displacement measure how far an object is from the starting point.

A player on a soccer field walks 100 meters to the East, turns North and walks 150 meters, turns West and Walks 100 meters, and finally turns south and WALKS 150 meters. What is the TOTAL DISTANCE TRAVELED and what is the TOTAL DISPLACEMENT?

a.	Total Distance is 200 meters & the Total Displacement is 450 meters east.
b.	Total Distance is 350 meters & the Total Displacement is 74 meters.
c.	Total Distance is 25 meters & the Total Displacement is 100 meters to the east.
d.	Total Distance is 500 meters & the Total Displacement is 0 meters.
e.	None of the above.

Total Distance is 500 meters & the Total Displacement is 0 meters.

How far does a car travel in 4 hours at a constant speed of 60 miles/hour?

a.	60 miles.
b.	64 miles.
c.	240 miles.
d.	4 miles.

240 miles.

How long will it take a boat moving at 5.6 m/s to travel 100 meters?

a.	560 seconds.
b.	100 seconds.
c.	0.056 seconds.
d.	17.9 seconds.

17.9 seconds.

Pick the correct statement regarding velocity and speed?

a.	Velocity tells you how fast an object moves. Speed tells you how fast and in which direction an object moves.
b.	Speed tells you how fast an object moves. Velocity tells you how fast and in which direction an object moves.
c.	Velocity tells you an objects direction only.
d.	Speed tells you an objects direction only.

Speed tells you how fast an object moves. Velocity tells you how fast and in which direction an object moves.

Which of the following is NOT a velocity?

a.	60 miles/hour.
b.	-100 m/s.
c.	+54 m/s.
d.	70 miles/hr northeast.

60 miles/hour.

What best describes the graph of displacement vs time if a car drops oil every second?

Linear relationship.

What does the slope of the displacement vs time graph represent?

Time (seconds)	Displacement (meters)
0	0
1	8
2	16
3	24
4	32
5	40
6	48
7	56
8	64

The speed of the car.

What does the correlation coefficient (R) value tell you?

Tells you the inverse relationship between the X and Y data

The combination coefficient that tells you the degree to which the Z and A data are predict one another.

The strength and direction of the relationship between the X and Y data on a graph.

Tells you the probability that the X data can be predicted by the temperature at the time of data collection.

The strength and direction of the relationship between the X and Y data on a graph.

The greater the time it takes to travel 100 miles, what happens to the velocity?

Greater the velocity

The slower the velocity

Time makes no difference when it comes to calculating velocity

The distance or displacement has no bearing on the velocity of an object.

The slower the velocity.

What does the coefficient of determination (R2) tell us?

How close the trendline fits your actual data.

The relationship between Y and Z.

The relationship between your table and your graph.

There is no relationship between R2 and your data.

How close the trendline fits your actual data.

What is the expected relationship between vibration frequency and temperature based on the provided data?

Linear relationship where temperature of metal increases as vibration frequency increases.