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Rules : Everyone must attempt to answer each question. PowerPoint PPT Presentation


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Rules : Everyone must attempt to answer each question. Show your work on a separate sheet of paper. Keep track of your points. Winners receive prize. continue. Go BACK. You need to click on a number to proceed to the questions. Click here. continue. Really!!

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Rules everyone must attempt to answer each question

  • Rules:

  • Everyone must attempt to answer each question.

  • Show your work on a separate sheet of paper.

  • Keep track of your points.

  • Winners receive prize.

continue


Rules everyone must attempt to answer each question

Go BACK. You need to click on a number to proceed to the questions.

Click here

continue


Rules everyone must attempt to answer each question

Really!!

Go BACK. You need to click on a number to proceed to the questions.

Click here

continue


Rules everyone must attempt to answer each question

Displacement = 27.4m + 3m -3m

Distance = 27.4m + 3m +3m

continue


Rules everyone must attempt to answer each question

2) This object in freefall accelerates at 9.8 m/s/s. Every second the velocity changes by 9.8 m/s

continue


Rules everyone must attempt to answer each question

A ball rolls down an incline from rest. How far does it travel in 3 seconds if it accelerates at 5 m/s2?

Show Work for Credit

d = vit + ½ at2

d = 0 + ½ (5 m/s2) (3s)2

d = 22.5 m

continue


Rules everyone must attempt to answer each question

4) Vavg = (Vf + Vi)/2

Vavg= (10m/s +25m/s)/2

Vavg = 17.5 m/s

continue


Rules everyone must attempt to answer each question

1) d = vit + ½ at2

-6m = ½ a (2.7s)2

a = 1.6 m/s/s down

continue


Rules everyone must attempt to answer each question

The acceleration of a projectile

is always 9.81 m/s2downward because the only force acting on the object is gravity.

continue


Rules everyone must attempt to answer each question

2)d = vit + ½ at2

-22m = ½ a (3.0s)2

a = 4.9 m/s/s down

continue


Rules everyone must attempt to answer each question

VERTICAL

d = vit + ½ at2

-45m = 0 + ½ (-9.81m/s2) t2

t = 3.0 s

HORIZONTAL

d = vit + ½ at2

d = (25 m/s)(3.0 s) + 0

d = 75 m

continue

Show Work for Credit


Rules everyone must attempt to answer each question

2) v vs. t graphs are always linear.

Slope = accel. =

-9.81 m/s2

continue


Rules everyone must attempt to answer each question

vf = vi + at

0 = 98 m/s + (-9.81m/s2)t

t = 10. s

continue


Rules everyone must attempt to answer each question

3) g = Fg/m

continue


Rules everyone must attempt to answer each question

Fnet = ma

12 N = (2kg+1kg)a

a = 4 m/s2

continue


Rules everyone must attempt to answer each question

A

B

C

D

E

Which graph(s) depict an object that is accelerating?

DAILY DOUBLE

Select an amount of points you want to wager before going on to the question.

You can only wager up to as many points as you currently have

B and C only

continue


Rules everyone must attempt to answer each question

2) An object in equilibrium has an acceleration equal to zero.

continue


Rules everyone must attempt to answer each question

Newton’s 3rd Law: the forces are equal in magnitude, opposite in direction.

Fnail on hammer = - Fhammer on nail

continue


Rules everyone must attempt to answer each question

Fnet = ma

50N – Ff = (4 kg)(10 m/s2)

Ff= 10N

continue


Rules everyone must attempt to answer each question

Fnet = ma

Fapplied – Ffriction = 0

Fapplied= Ffriction

Fapplied= μFN = (0.05)(80kg x 9.81m/s2)

Fapplied= 40N

continue


Rules everyone must attempt to answer each question

(C) If the net force is zero, the acceleration must also be zero.

The slope of the speed graph = accel. = 0.

Constant speed = constant slope of distance graph.

continue


Rules everyone must attempt to answer each question

Show Work for Credit

Fnet = ma

Fapplied – Ffriction = 0

Fapplied = Ffriction

Fapplied= μFN = (0.67)(60 N)

Fapplied= 40N

continue


Rules everyone must attempt to answer each question

Fnet = ma = 0

F – Ffriction– Fparallel = 0

F = Ffriction+ Fparallel

F = Ffriction + Fg sinθ

F = 3N + (10N)sin30°

F= 3N + 5N

F= 8N

continue


Rules everyone must attempt to answer each question

B

(4)

Add vectors head to tail

continue


Rules everyone must attempt to answer each question

List 3 scalar quantities and 3 vector quantities. Include units.

DAILY DOUBLE

Select an amount of points you want to wager before going on to the question.

You can only wager up to as many points as you currently have

Scalar: distance (m), speed (m/s), mass (kg), time (s),temp (°C)

Vector: displacement (m), velocity (m/s), acceleration (m/s2), Force (N), impulse (N·s), momentum (kg·m/s)

continue


Rules everyone must attempt to answer each question

(4)

FH = Fcosθ

FH =(24N)cos35°

FH = 20. N

FV= Fsinθ

FV=(24N)sin35°

FV= 14. N

continue


Rules everyone must attempt to answer each question

A

B

R

(1)

continue


Rules everyone must attempt to answer each question

(4) Arrange 30N vectors to be head-to-tail, resultant starts at the tail of the first and ends at the head of the last.

30N

30N

R

continue


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