Welcome to Work/Energy/Power JEOPARDY KEYBOARDING
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- Slide 1
- Slide 2
- Welcome to Work/Energy/Power JEOPARDY KEYBOARDING
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- Final Jeopardy Question Horizontal Problems Components 100
Relative Velocity 500 400 300 200 100 200 300 400 500 Projectiles
Launch at An Angle
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- Which of the following plays a determining factor in the time
of travel for a projectile? a.Horizontal speed b.Horizontal
displacement c.Vertical displacement d.Acceleration due to gravity
Back Horizontal Problems 100 pts
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- C and D Back Horizontal Problems 100 pts Answer
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- Which of the following remains unchanged as an object travels
along a trajectory? a.Vy, b. Vx, c. Y position, d. X position, e. a
x f. a y Back Horizontal Problems 200 pts
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- Back Horizontal Problems 200 pts V x, a x, a y
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- Back Predict the path of an object dropped from an airplane
would take. A. B. C. D. E.
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- Back Horizontal Problems 300 pts A.
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- Back Horizontal Problems 400pts An object is thrown off a 20 m
cliff with a Velocity of 2 m/s. How much time was the Object in the
air?
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- Back Horizontal Problems 400 pts Answer 2s
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- Back Horizontal Problems 500 pts An object is thrown off a 10 m
cliff with a Velocity of 2 m/s. How for does it move in the
horizontal direction?
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- Back Horizontal Problems 500pts Answer 4m
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- A runner moves 3 km E and then 4 km N. What is the runners
displacement? Back Components 100pts
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- 5km at 53 degrees. Back Components 100 pts
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- Back Components 200 pts A person is shot out of a cannon with
an initial Velocity of 3m/s at an angle 20 degrees. Determine the
components a.Vx b.Vy
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- Back Components 200pts Answer Vx = 2.8 Vy = 1.02
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- A airplane flies with a speed of 40 m/s 20 NE. What is the
Northern component? Back Components 300pts
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- Back Components 300 pts 13.7m/s
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- Back What are the acceleration components for a projectile?
Components 400 pts
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- Ax = 0 m/s/s Ay = 9.8 m/s/s Back Components 400 pts Answer
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- Back Components 500 pts What are the velocity components at the
Top of a trajectory for an object launched At an angle of 20
degrees with an initial Velocity of 35m/s?
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- Back Componetns 500 pts Answer Vx = 16.4m/s Vy = 0
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- Describe what happens to the velocity components of an object
launched at an angle as it travels along its trajectory. Back
Projectiles At an angle 100 pts
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- The horizontal component remains Unchanged, and the vertical
Component changes at a rate of 9.8 m/s every second towards the
earth Back Projectiles 100 pts Answer
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- Back Determine the total time a projectile is in the Air if it
was shot at a 45 degree angle with an initial velocity of 22 m/s
landing at the same Height it started? Projectiles 200pts
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- Back Use y-yi = 0 =vyi*t + 1/2gt^2 t= 2Vyi/g =3.4 s Projectiles
200pts Answer
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- Back Projectiles 300pts Determine the range of a project if it
was shot at a 45 degree angle with an initial velocity of 22 m/s
landing at the same Height it started?
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- Back Projectile 300pts Answer X-Xi = Vx t X = (22 cos 45)(3.4s)
X =620 m
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- Back Projectiles 300 Determine the max height of a projectile
if it was shot at a 45 degree angle with an initial velocity of 22
m/s?
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- Projectile 400pts Y-0 = -Vyi 2 /2g or Y-0 = Vyi*t 1/2 g t 1/2 2
Y = -(22Sin45) 2 /2g =12.34 m Back
- Slide 32
- Projectile 500 pts Determine the total time and range of a
projectile shot from a 20 m high cliff at a 45 degree angle with an
initial velocity of 22 m/s landing on the ground below?
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- Time = X-Xi = Back
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- A man walks east at 5m/s on a moving walkway that is moving
3m/s east. What is the mans velocity relative to a stationary
observer? Back Relative Velocity 100 pts
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- 8m/s? Back
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- A man walks at a speed of +4 m/s relative A man who is walking
towards him moving At -1 m/s relative to a stationary observer.
What is the firsts mans speed relative to the Stationary observer?
Back
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- Relative Velocity 200 pts +3m/s
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- A boat in still water takes 40 s to cross a 30m wide river. If
the current in this river is moving downstream at 1m/s what is the
boats velocity relative to a person standing on the shore?
Back
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- 1.25 m/s at 53 SE
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- Back Two men moving at 6m/s step on to a moving walkway on
opposite ends. The velocity is 4m/s east and is 10m long. What is
the relative speeds of the men with respect to a stationary
observer?
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- 10 m/s east 2 m/s west Back
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- Two men moving at 6m/s step on to a moving walkway on opposite
ends. The velocity is 4m/s east and is 10m long. How much time does
it take for the men to meet?
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- Back 8.3m.