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Senior High School: 11th and 12th Grade
Physics
Forces - Forces And Braking
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Q.1
What can affect a vehicle's braking distance?
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Worn brakes
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Adverse weather
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Worn tires
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All of the above
Q.2
Which of the following statements is true?
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The greater the speed of a vehicle, the greater the braking force needed to stop it within a certain distance
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The smaller the speed of a vehicle, the greater the braking force needed to stop it within a certain distance
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The greater the speed of a vehicle, the less braking force is needed to stop it within a certain distance
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The greater the mass of a vehicle, the less braking force is needed to stop it within a certain distance
Q.3
What is stopping distance?
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Braking distance
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Reaction time
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Braking distance and reaction distance
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Reaction distance
Q.4
What is the greatest resistive force a car experiences when no braking forces are applied?
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Air resistance
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Passenger weight
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Stones
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Rain
Q.5
What is braking distance?
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The distance traveled in 10 seconds when a car is accelerating
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The distance traveled while the brakes are applied
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The distance required to accelerate to 100mph
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The energy required to stop in a given distance
Q.6
Which statement is true?
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When the brakes are applied, work done by friction between the brake and wheel increases the kinetic energy of the vehicle and decreases the temperature of the brakes
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When the brakes are applied, work done by friction between the brake and wheel reduces the kinetic energy of the vehicle and increases the temperature of the brakes
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When the brakes are released, work done by friction between the brake and wheel reduces the kinetic energy of the vehicle and increases the temperature of the brakes
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When the brakes are applied, work done by friction between the brake and wheel reduces the kinetic energy of the vehicle and decreases the temperature of the brakes
Q.7
If a driver's reaction time is 0.2 s and the braking time when their car is traveling at 10 m/s is 10 s, how far does the car travel before it comes to rest?
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100m
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101m
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102m
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103m
Q.8
A car stops in 20 m when traveling at 30 kilometers per hour. If the car is traveling at 40 kilometers per hour, how far does the car take to stop?
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20m
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26m
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27m
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30m
Q.9
If a car is traveling at a steady speed, what can be said of the driving and resistive forces acting on the car?
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In equilibrium
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Driving forces are twice as large as the resistive forces
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Resistive forces are twice as large as the driving forces
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There are no resistive forces acting on the car at a steady speed
Q.10
What can affect a driver's reaction time?
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Drink
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Drugs
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Tiredness
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All of the above
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