M2 Work and Power
Quiz by Ian Gabriel
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10 questions
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- Q1What is the formula for calculating power?Power = Work / TimePower = Distance / TimePower = Work x TimePower = Force x Distance30s
- Q2If you lift a box weighing 20 N to a height of 2 meters, how much work do you do?40 Joules30 Joules10 Joules50 Joules30s
- Q3Which unit is used to measure power?MeterJouleWattNewton30s
- Q4If a machine does 100 Joules of work in 5 seconds, what is its power?50 Watts25 Watts20 Watts10 Watts30s
- Q5What happens to the power when the same amount of work is done in a shorter time?Power does not depend on timeThe power decreasesThe power stays the sameThe power increases30s
- Q6Which of the following is an example of work being done?Pushing a box across the floorStanding against a wallSitting on a chairHolding a book still30s
- Q7
What is the unit of work?
Newton
Joules
meter
seconds
30s - Q8What is the relationship between work, power, and time?Power is work divided by timePower measures only force appliedPower is time divided by workPower adds work to time30s
- Q9A car engine does 3000 Joules of work in 60 seconds. What is the power of the engine?50 Watts100 Watts30 Watts60 Watts30s
- Q10Which of these scenarios involves power?A book resting on a tableA person running up stairsA car parked in a garageA tree standing in a forest30s