Free Exam: 26iesoHR_Session4_Physics_Secondary2
Number of Questions in Test: 25
Number of Questions in Preview: 5
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[size=4]An object is released from rest a height h above the ground. A second object with four times the mass of the first if released from the same height. The potential energy of the second object compared to the first is[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 2
[size=4]A 15.0-kg object is moved from a height of 7.00 m above a floor to a height of 13.0 m above the floor. What is the change in gravitational potential energy?[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 3
[size=4]A 700-N man jumps out of a window into a fire net 10m below. The net stretches 2 m before bringing the man to rest and tossing him back into the air. The maximum potential energy of the net, compared to its unstretched potential energy, is:[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 4
[size=4]A 2-kg block is thrown upward from a point 20m above Earth’s surface. At what height above Earth’s surface will the gravitational potential energy of the Earth-block system have increased by 500 J?[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 5
[size=4]A 6.0-kg block is released from rest 80m above the ground. When it has fallen 60m its kinetic energy is approximately:[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |