Question

a. What is the distance traveled by the car between 5 and 10 seconds? (2 points)

b. What is the average speed of the car between 5 and 10 seconds? (Answer in km/s.) (2 points)

c. Describe how the speed of the car changes throughout its test run. (2 points)

d. If you had a graph of velocity versus time for this test, what would be the total area under the curve? (2 points)

Answer 1

a. 1km
b. 2km
c.It increases
d. ?

Answer 2

a) distance at 10 seconds minus distance at 5 seconds = ?

Answer 3

0.03 - 0.01 = ?

Answer 4

oh shoot i read it wrong it would be 0.02km

Answer 5

good

b) is just that distance/2 seconds

Answer 6

so 1

Answer 7

0.02/2=0.01km

Answer 8

km/s but yes good

Answer 9

The speed stays subtlety constant?

Answer 10

for c) well it starts with a velocity of approx 0.002 km/s during the first 10 seconds, accelerates to (0.02/5)km/s, then starts to level off at about 0.002 km/s again (feel free to check my calculations b/c i just kind of eyeballed it)

Answer 11

and of course increases

Answer 12

I don't really know how qualitative/quantitative they want you to describe it

Answer 13

Yeah i will take care of that, for the first then seconds would it be 0.002 or 0.003

Answer 14

Just double checking

Answer 15

first 10 seconds*

Answer 16

yeah

next 15 seconds (from 10 to 15) I got 0.03 km so 0.03/5 km/s

Answer 17

Starts with a velocity of approx 0.00 km/s during the first 10 seconds, accelerates to (0.03/5)km/s, then starts to level off at about 0.003 km/s again.

Answer 18

Starts with a velocity of approx 0.003km/s during the first 10 seconds, accelerates to (0.03/5)km/s, then starts to level off at about 0.003 km/s again.

Answer 19

I'm going to reword it just making sure the numbers are correct

Answer 20

yeah that's pretty much it

for d) the area under the velocity curve is just the total distance 0.09 km

Answer 21

Perfect. Thanks !!!