Question

write all work in your notebook or cut and attach (tape or glue) into your notebook neatly

part iii: research and answer the following review questions using complete sentences.

1. what are the key differences between scalar and vector quantities?

1. give at least three examples for each quantity type

• scalar quantities:
• vector quantities:

1. why are vectors important to include in shelly’s adventure?

note: speed is a scalar quantity that refers to how fast an object is moving. speed can be thought of as the rate at which an object travels a distance.

1. if shelly travels from where she finds the buried treasure (300 km west) to “jb’s crab shack” in 130 hours, calculate shelly’s average speed. speed = distance/time. show your answer using km/hr

note: distance is a scalar quantity that refers to how much ground an object has covered during its motion.

1. calculate the total distance of shelly’s journey from start to finish (km)

note: displacement is a vector quantity that refers to a straight line from start to finish in a certain direction.

1. use a ruler to determine the displacement between the finish and starting point. be sure to note the direction from start to finish. (remember to convert your answer from centimeters to kilometers using the factor of 1cm = 20 km.)

1. how does the displacement compare to her total distance traveled on this adventure?

Explanation:

Question 4 Solution:

Step1: Identify formula and values

We use the formula for speed: \( \text{Speed} = \frac{\text{Distance}}{\text{Time}} \). The distance is \( 300 \, \text{km} \) and the time is \( 130 \, \text{hours} \).

Step2: Substitute values into formula

Substitute \( \text{Distance} = 300 \, \text{km} \) and \( \text{Time} = 130 \, \text{hours} \) into the formula: \( \text{Speed} = \frac{300}{130} \)

Step3: Simplify the fraction

Simplify \( \frac{300}{130} \approx 2.31 \) (rounded to two decimal places)

Answer:

Shelly's average speed is approximately \( \boldsymbol{2.31 \, \text{km/hr}} \)