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unit 2 test
| Question | Answer |
|---|---|
| explain the relationship between potential and kinetic energy | potential- stored energy kinetic- energy of motion |
| which would have more energy a 10kg ball falling from 10m or a 5kg ball falling from 25m | 5kg ball falling from 25m |
| what is the potential energy of a 10kg book that is placed on a shelf that is 2.5 meters high | 2450J |
| a truck is cruising down the highway at 75mph | KE |
| a snowman is sitting at the top of a hill | PE |
| a snowball is rolling down a hill with a speed of 2m/s | BOTH |
| a snowflake is falling from the sky | KE |
| balanced or unbalanced 16N north and 16N south | unbalanced |
| balanced or unbalanced 16N north and 16N north | balanced |
| what does it mean if the Net Force acting on an object is 0N | equilibrium |
| what type of force always causes change in speed, direction, or both | unbalanced force |
| what is a common unbalanced force acting on objects in motion | friction |
| if a baseball and a cannonball are dropped from the same height at the same time, and there is no air resistance, which ball will hit the ground first | cannonball |
| friction acting on a rolling ball to eventually bring the ball to a stop is an example of which type of force | balanced |
| what is the force weight of a 45 kg desk | 441 N |
| what is the mass of a 35 N cat | 3.57 kg |
Created by:
smileyk
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