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- 1. Multiple ChoiceWhich of the following is a true statement about work?It measures how quickly an object acceleratesIt measures how much effort is applied over a certain distanceIt measures the change in an object's rate of speedIt measures how much time it takes to move a massive object
- 2. Multiple ChoiceWhat does one newton exerted over a distance of one meter equal?One wattOne hertzOne voltOne joule
- 3. Multiple Choice
A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball?77 J7.7 J0.7 J770 J - 4. Multiple ChoiceA weightlifter lifts two 300 newton weights 1.5 meters off the ground. How much work has he done?600 J660 J900 J1200 J
- 5. Multiple ChoiceSimple machines make work easier by increasing what?The distance over which work is doneThe force needed to do workThe time required to do workThe acceleration of a massive object
- 6. Multiple ChoiceWhich of these is a measure of force?100 newtons100 meters per second100 joules100 watts
- 7. Multiple ChoiceYou move a 12-newton box up a 6-meter ramp. In order to find out how much power you created, what would you need to know?The mass of the boxThe slope of the rampThe direction the box movedHow long the task took
- 8. Multiple ChoiceYou do 90 joules of work in 30 seconds. How much power have you generated?30 watts3 watts120 watts270 watts
- 9. Multiple ChoiceYou move an 8-newton weight five meters in 4 seconds. How much power have you generated?160 watts10 watts6.4 watts17 watts
- 10. Multiple ChoiceWhich of the following would produce the most power?A mass of 10 kilograms lifted 10 meters in 10 secondsA mass of 10 kilograms lifted 10 meters in 5 secondsA mass of 5 kilograms lifted 10 meters in 5 secondsA mass of 5 kilograms lifted 5 meters in 10 seconds
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