topic 2 mechanics who wants to be a millionaire revision power point
TRANSCRIPT
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Mechanics Revision Special!
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A: B:W m.s-1
£100 Kinetic energy is measured in…………?
C: D:m.s-2 J
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Excellent!Excellent!Excellent!Excellent!
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Unlucky!Unlucky!Unlucky!Unlucky!
That’s incorrect
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A: B:Ns Kg.m.s-2
£200Impulse is measured in…………?
C: D:N.s-1 N.kg
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Excellent!Excellent!Excellent!Excellent!
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SorrySorrySorrySorry
That’s incorrect…
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A: B:The initial and final velocities are known
movement is only in one direction
£300We can use the equations of motion (SUVAT) when …………?
C: D:the acceleration is constant
We have remembered to bring a calculator
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FantasticFantasticFantasticFantastic
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Oh dear!Oh dear!Oh dear!Oh dear!
That’s incorrect…
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A: B:momentum impulse
£500In mechanics, p stands for………..?
C: D:potential friction
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BrilliantBrilliantBrilliantBrilliant
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SorrySorrySorrySorry
That’s incorrect…
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A: B:Inelastic collision Perfect collision
£1,000A collision where no kinetic energy is lost?
C: D:Imperfect collision Elastic collision
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Well done!Well done!Well done!Well done!
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Unlucky!Unlucky!Unlucky!Unlucky!
You should know this!
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A: B:Ftanθ Fsinθ
£2,000In the diagram, the vertical component of the force is…
C: D:Fcos2θ Fcosθ
`
θ
F
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Super!Super!Super!Super!
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Oh no!Oh no!Oh no!Oh no!
That’s incorrect!…
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A: B:mvr mv2/2
£4,000Centripetal force =
C: D:p2/m mv2/r
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Very good!Very good!Very good!Very good!
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IncorrectIncorrectIncorrectIncorrect
So near and yet so far!
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A: B:W/cosθ W/sinθ
£8,000A metal bar (XY) of weight W is hung from a point P by wires. What is the tension in each wire?
C: D:W/2cosθ W/2sinθ
`
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Very good!Very good!Very good!Very good!
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Sorry!Sorry!Sorry!Sorry!
That’s incorrect… I suck!
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A: B:1971 1961
£16,000In what year did a man first step foot on the moon?
C: D:1958 1969
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Very good!Very good!Very good!Very good!
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UnluckyUnluckyUnluckyUnlucky
That’s incorrect…
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DigestionA: B: 36 m.s–1
£32,000The change in velocity in the first six seconds is….?
C: D:
2.0 m.s–1
Digestion72 m.s–1 0.50 m.s–1
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Brilliant!Brilliant!Brilliant!Brilliant!
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Unfortunately…Unfortunately…Unfortunately…Unfortunately…
That’s incorrect!
I suck.
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A: B:momentum velocity
£64,000The net force acting on a body is zero.
Which of the following quantities must also have zero magnitude for this body?
C: D:acceleration kinetic energy
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Well done!Well done!Well done!Well done!
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I’m sorryI’m sorryI’m sorryI’m sorry
That’s incorrect…
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A: B:mg/(M + m) (M + m)/mg
£125,000A block of mass M on a frictionless table is attached to a mass m.
What is the acceleration of both masses?
C: D:g mg/M
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Very good!Very good!Very good!Very good!
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IncorrectIncorrectIncorrectIncorrect
You should have got that one!
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A: B:2100 J 1500 J
£250,000An object of weight 50 N is dragged up an inclined plane at constant speed, through a vertical height
of 12 m. The total work done is 1500 J. The work done against friction is….
C: D:50 J 900 J
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Excellent!Excellent!Excellent!Excellent!
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Wrong Choice!Wrong Choice!Wrong Choice!Wrong Choice!
That’s incorrect…
I suck.
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A: B:200 kN 50 MN
£500,000An electric train develops a power of 1.0 MW when travelling at a constant speed of 50 m.s-1.
The resistive force acting on the train is
C: D:20 kN 200 N
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Very Good!Very Good!Very Good!Very Good!
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Sorry!Sorry!Sorry!Sorry!
That’s incorrect…
I suck.
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A: B:
£ 1,000,000 M > m. The downward acceleration of the masses is…?
C: D:
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Fantastic!Fantastic!Fantastic!Fantastic!
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UnluckyUnluckyUnluckyUnlucky
You were nearly a millionaire!I wished I was as clever and handsome as Mr Porter.
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Mr Porter thanks you for playing!Mr Porter thanks you for playing!
Go and learn your definitions!Go and learn your definitions!