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When reporting the speed, we need to include the value, units and direction the object was traveling.

Question 1 options:
True
False
Question 2 (1 point)
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When reporting the velocity of an object, we need to include the value, the units and the direction the object was traveling.

Question 2 options:
True
False
Question 3 (1 point)
An object travels 10 meters to the right and 7 meters to the left, what distance has it traveled?

Question 3 options:

17

17 meters

3

3 meters

Question 4 (1 point)
An object travels 5 meters to the north and 7 meters south, what was its total displacement?

Question 4 options:

2 meters

2 meters south

12 meters

12 meters north

Question 5 (1 point)
An object travels 10 meters to the right before reversing direction and going 13 meters to the left. Jenny reported its displacement as 3 meters, but she was not correct. What did she do wrong?

Question 5 options:

She reported the distance instead of the displacement.

She forgot to include the units.

She did not give the direction as either left, or negative.

She did not do anything wrong.

Question 6 (1 point)
A car travels 5 miles north and then 2 miles south in 1/4 hour. What was its average speed?

Question 6 options:

7 mph

3 mph

28 mph

14 mph

Question 7 (1 point)
A car travels 5 miles north and then 2 miles south in 1/4 hour. What was its average velocity?

Question 7 options:

28 mph

12 mph

12 mph south

12 mph north

Question 8 (1 point)
Mya is running an experiment to determine if a car with large tires will move faster than a car with small tires. Her ramp is 0.75 meters long. She recording the following times on each of her trials: Trial 1: 2.5 seconds, Trial 2: 2.75 seconds, Trial 3: 2.98 seconds. What was the average speed of her car?

Question 8 options:

2.74 m/s

3.7 m/s

0.27 m/s

2.7

Question 9 (1 point)
Data that is accurate, is data that is really close to the actual value, but data that is precise is data that is repeated over and over again.

Question 9 options:
True
False
Question 10 (1 point)
Accuracy and precision mean the same thing.

Question 10 options:
True
False

question 1: speed is the total distance covered by an object over a given time regardless of the direction of the distance hence when reporting we report only the value and unit of the speed which ( km/h )or ( m/s )

question 2: velocity is change in distance covered by an object ( on a straight line) also known as displacement. over a given time by the object hence the direction of the object is considered

question 3: to calculate for distance traveled by an object you have to sum up the total distance traveled by the object on a straight line i.e ( 10 + 7 ) = 17 meters

question 4: displacement is change in distance traveled by an object on a straight line in opposite direction i.e ( 7 - 5 ) = 2 meters

question 5: displacement is change in distance traveled on a straight line in opposite direction hence her answer was correct i.e ( 13 - 10) = 3 meters

question 6: speed = distance/time equation 1

distance = 5 + 2 = 7 miles

time = 1/4 hour = 0.25 hour

equation 1 becomes

speed = 7/0.25 = 28 mph

question 7: Average velocity = displacement/time equation 1

displacement = 5 - 2 = 3 miles

time = 1/4 = 0.25 hour

equation 1 becomes

average velocity = 3/0.25 = 12 mph

question 8: Average speed = total distance / total time equation 1

total distance = 0.75 + 0.75 + 0.75 = 2.25 meters

this is considered the total distance because for each trial she covered ramp which was 0.75 meters

total time = 2.5 + 2.75 + 2.98 = 8.23 seconds

equation 1 becomes

average speed = 2.25 / 8.23 = 0.27 m/s

question 9: It is true because precise is a data that is repeated over and over which might not actually be the actual/correct value while accurate is the data that is closest to the known value

question 10: from the definition in question 9 above the answer is false