The Blue Jay Problem - Motion, Forces, Energy

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Assumptions:
- acceleration is constant
- the object does not turn around
- north and east are positive directions and drawn to the right.
- air resistance is negligible unless the object moves 'quickly'.

A cubic blue jay is pulled North along the dirt with a rope by a child. The blue jay passes the orign while moving slowly North and speeding up.

On a sheet of paper, create:
a. Sketch
b. Velocity-time graph
c. Interaction diagram
d. Force diagram
e. Energy bar chart.

f. If the 1.25-kg blue jay was initially moving at 2.2 m/s and after being pulled with 4.10 N of force for 12.2 m moved at 6.4 m/s, how much thermal energy was created?

a. From the image below, select the sketch that best matches the one you drew.

sample format: 𝗮𝟯

1 point

b. From the image below, select the velocity-time graph that best matches the one you drew.

sample format: 𝗮𝟯

1 point

c. Select all the options (i.e. object(s) + force(s)) that best match those found in your interaction diagram.

6 points

none

Fapp

Fair

surface (dirt path)

Earth

rope

rope puller

pusher

air

d. Identify all the forces and their directions found in your force diagram.

7 points

none

direction 1

direction 3

direction 5

direction 7

Fair

Fapp

e. Energy bar chart sample

e. Enter your energy bar chart below.

6 points

-4

-3

-2

-1

EK'

Eg'

ΔEth

Clear selection

f. Numeric answer (magnitude only)

1 point

f. Units

1 point

(none required)

m/s

m/s²

f. Direction

1 point

(none requried)

down

forwards

backwards

right

left

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