#59
4.5.6.2 Speed
Paper 2 · Higher combined
Spec reference: 4.5.6 (subtopic).
What you need to know
- speed²
- E = ½mv²
- When something is off the ground, it has gravitational potential energy
- gravitational potential energy = mass x gravitational field strength x
- height
- E = mgh
- Required Practical
- Investigating Specific Heat Capacity
Self-assessment (checklist)
- I can state whether speed is a scalar or vector quantity.
- I can describe what happens to speed when people
- I can give some factors that affect the speed at which a
- I can recall the typical speed for a person walking.
- I can recall the typical speed for a person running.
- I can recall the typical speed for a person cycling.
- I can recall the typical values of speed for different
- I can give two examples of things other than objects
- I can give a typical value for the speed of sound in air.
- I can make measurements of distance and time.
- I can calculate the speed of an object from
- I can recall and apply the correct equation to calculate
- I can rearrange the equation linking distance travelled,
- I can calculate the average speed for an object with
Key steps (method)
- Identify what the question is testing and use the correct equation/definition.
- Show substitutions and units clearly.
Common mistakes
- Unit conversions, rearranging errors, or quoting a law without applying it.