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Physics, Science
10th -
12thgrade
S24 16.1 on Understanding Car Crashes - It's Basic Physics
26 questions
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- 1. Multiple ChoiceWhen the truck began moving, the crash dummy fell off the back. What is the property of matter that caused the dummy to resist a change in motion?inertiamomentumspeedforce
- 2. Multiple ChoiceIsaac Newton's First Law of Motion states that an object at rest remains _______ unless acted upon by an external force.in motionfrozenat restmoving
- 3. Multiple ChoiceIsaac Newton's First Law of Motion also states that a body in motion continues to move at a constant _______ in a straight line unless acted upon by an external force.speedinertiacurvestationary
- 4. Multiple Choice
Newton explained the relationship between crash forces and inertia in his ______ Law of Motion.
first
second
third
- 5. Multiple ChoiceMomentum is inertia in motion. It is the product of an object's mass and its _________.interiavelocitysizeforce
- 6. Multiple ChoiceIs the following statement true or false? Since momentum is the quantity of motion, all vehicles moving at the same speed will have the same momentum.truefalse
- 7. Multiple ChoiceImpulse is the product of ______ and the time interval during which the force acts.momentuminteriamassforce
- 8. Multiple ChoiceThrowing an egg against the wall made it break because the wall applied a larger force over a shorter time.truefalse
- 9. Multiple ChoiceAgainst the sheet, the egg did not break because the sheet applied a small force over a longer time.truefalse
- 10. Multiple ChoicePeople often refer to g's as forces, but they are not. Instead, a "g" is a standard unit of __________.impulseaccelerationinertiadistance
- 11. Multiple ChoicePeople in serious car crashes experience very high g's and this raises the probability of ________.seizureshallucinationinjurycramping in muscles3
- 12. Multiple ChoiceCrumple zones, airbags, and crash cushions all work by extending the impact time during a collisiontruefalse
- 13. Multiple ChoiceWhich of the following makes momentum a vector quantity?It has direction and magnitude.It has magnitude and speed.It has speed and mass.It has mass and magnitude.
- 14. Multiple ChoiceDuring a front impact collision of two unequally sized vehicles going at the same speed, a passenger in a larger vehicle will experience _______ force.morelessequalrandom
- 15. Multiple ChoiceVehicle size helps you in all collisions, while ______ primarily helps in two-vehicle collisions.densityspeedweightinertia
- 16. Multiple ChoiceEnergy is the ability to do work.truefalse
- 17. Multiple ChoiceWhich of the following is the best description of kinetic energy?Energy of positionEnergy of motionAbility to do work
- 18. Multiple ChoiceAn object's stored energy, known as _______ energy, can be determined by knowing the object's position and its condition.kineticchemicalthermalpotential
- 19. Multiple ChoiceThe rapid transfer of _______ energy is the cause of injuries in a car collision.potentialkineticelectricalgravitational
- 20. Multiple ChoiceCrashworthiness refers to the protection that a vehicle gives to its occupants during a crash.truefalse
- 21. Multiple ChoiceIf the front end of a car can crumple during a crash without allowing any damage to the compartment, then the people inside are protected from injury.truefalse
- 22. Multiple ChoiceThere are many factors that contribute to the overall crashworthiness of a vehicle. Which of the following is NOT a factor that you should consider when judging if a car has good crashworthiness?vehicle structurerestraint systemsresale pricealterations and repairs
- 23. Multiple ChoiceThe rear seats of most cars lack seat belt systems with crash tensioners and _____.crash torsionersforce limiterscrash stressorsforce multipliers
- 24. Multiple Choice
Which of the following statements is correct?
It is always safe to travel at the speed limit
Your travelling speed should be as close to the speed limit as possible
Travelling at the speed limit is sometimes too fast for the conditions
- 25. Multiple Choice
Are you allowed to use a hand held mobile when driving?
No
Yes, providing you do not lose concentration
- 26. Multiple Choice
Which of the following statement is correct?
Passengers in vehicles are less likely to be injured in a crash if they are wearing seatbelts
The nature of injuries in motor vehicle accidents is not related to the wearing of seatbelts
Passengers in the rear seats of vehicles are not required to wear seat belts
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