Forces and Motion

Big Ideas: More info...

  • Objects interact with each other (by contact or at a distance) - giving rise to pairs of forces. 
  • A force acting on an object causes its velocity to change; without a net force, its velocity is constant.

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We have 43 misconceptions on this result

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Distance
Forces and Motion IOP RESOURCES

The Isochronic map

The Isochronic map: In 1883, Francis Galton, Charles Darwin’s cousin, developed an ‘Isochronic Passage Chart for Travellers’...

Stories from Physics 11-14 14-16

Distance
Forces and Motion IOP RESOURCES

The bun gauge

Many measuring devices have been developed in the history of science but one of the most unusual is the bun gauge in the...

Stories from Physics 11-14 14-16

Distance
Forces and Motion IOP RESOURCES

Getting leverage

Archimedes is supposed to have said: ‘Give me a lever and a place to stand and I’ll move the Earth’. An estimate in a paper...

Stories from Physics 11-14 14-16

Distance
Forces and Motion IOP RESOURCES

Cat and mouse satellites

The GRACE (Gravity Recovery and Climate Experiment) mission, launched by NASA in 2002, makes use of two satellites, Tom and...

Stories from Physics 11-14 14-16

Distance
Forces and Motion IOP RESOURCES

Broadening your horizons

A straightforward geometrical calculation can determine an approximation for the distance to the horizon given an observer’s...

Stories from Physics 11-14 14-16

Distance
Forces and Motion IOP RESOURCES

Not a level-playing field?

Countries base their measurements of elevation above sea level on different reference locations, as shown in the table below...

Stories from Physics 11-14 14-16

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