# Work and Energy

## Quiz by Ron Andrew

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10 questions
• Q1
Which of the following is a power unit?
watt
newton-second
joule/second
joule
120s
• Q2
A 5.20 kg ball is lifted into a storage rack. If the increase in potential energy is 145 j, what was the increase in the height of the ball?
27.9 m
2.85 m
0.0356 m
0.351 m
120s
• Q3
Two identical objects move with speeds of 5.00 m/sec and 30.0 m/sec. What is the ratio of their kinetic energies?
1/36
1/12
1/180
1/6
120s
• Q4
Which of the following objects has the largest kinetic energy?
mass 3m and speed 2v
mass m and speed 5v
mass 5m and speed v
mass 2m and speed 3v
120s
• Q5
A car's speed increases from 4.00 m/sec to 20.0 m/sec. At 20.0 m/sec, the car will slide _______ times farther after the brakes are applied uniformly than it would have at 20.0 m/sec
16
10
5
25
120s
• Q6
120s
• Q7
120s
• Q8
120s
• Q9
120s
• Q10
120s

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