698107
Descrição
Mapa Mental por Disneynut98, atualizado more than 1 year ago
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Criado por Disneynut98
mais de 10 anos atrás
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Forces and Energy
- A resultant force shows the combined effect of
several forces. It makes an object accelerate
(change speed or directiion)
- The stopping distance of a
vehicle is thinking distance plus
braking distance.
- SD = TD + BD
- SD = TD + BD
- Moving objects reach a
terminal velocity (top
speed) when drag forces
matches driving forces.
- Momentum is mass x velocity. It is conserved when objects collide of
explode apart if no external forces act.
- Momentum = Mass (kg) X Velocity (m/s)
- Momentum = Mass (kg) X Velocity (m/s)
- A force transfers energy when it does some work on an
object.
- Objects gain gravitational potential
energy if they are lifted up. Moving
objects have kinetic energy. Stretched of
squashed elastic objects store elastic
energy.
- The speed of an object can be found
using a distance time graph. The
acceleration and distance traveled can be
found using a velocity time graph.
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