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Physics

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Juliet Olson

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Cards in this guide (7)
What conditions must be met in order for work to be done

At least part of the applied force must be in the same direction as the movement of the object.

The applied force must make the object move.

Do both gases and exert a buoyant force

Yes. Gases and liquids both exert a buoyant force.

Does An object's buoyant force and weight mean the same thing

no because buoyant means how much can an object float and weight means how much it weighs.

How much work is done to increase a 20 kg scooters speed from 10 ms to 20 ms

3000

Spaceship 1 and Spaceship 2 have equal masses of 300 kg Spaceship 1 has an initial momentum magnitude of 600 kg-m/s What is its initial speed
Spaceship 1 and spaceship 2 have equal masses of 200 kg 1 has a speed of 0 ms and spaceship 2 has a speed of 10 ms what is the magnitude of their combined momentum

2000

Does speed affect gravitational potential energy of an object

Does speed 'effect' the gravitational potential energy of an object? No, but gravitational potential energy can be converted into kinetic energy - so the gravitational potential energy can effect the speed.

Ep = mgh

Energy Potential = mass * 9.81 (gravity) * height

Speed / Velocity is absent from that equation.

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