2004
_ Important concepts you need in order to do this question:
- How to calculate kinetic energy
- How to calculate gravitational potential energy
- Conservation of mechanical energy
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Now, let's take a look at two similar questions on work done
Now, let's take a look at two similar questions on work done
2007
2011
_ Important concepts you need in order to do these two questions:
- How to determine which force is relevant to the work done
- How to determine which distance is relevant to the work done
- How to calculate work done from force and distance
2010
_
(e) E2 < E1 (1 point for stating this)
Because:(1 point for stating one or more of these reasons)
Important concept you need to know in order to do this question:
Because:(1 point for stating one or more of these reasons)
- Kinetic energy is transformed into other forms of energy (heat, sound, light)
- Kinetic energy is not conserved in inelastic collision
Important concept you need to know in order to do this question:
- conservation of mechanical energy
- how to calculate kinetic energy
- how to calculate elastic potential energy
- inelastic collision
- other forms of energy