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Using the equation W = F * d we know work is equal to the force in the same direction as the distance moved. To find the force in the same direction as the distance we must find the horizontal component. ...

Section 1: The object is moving away from its origin with a constant speed. There is no acceleration as demonstrated by the linear increase in displaceme...

The natural frequency of a glass can be found by tapping it or making it 'sing' (running a wet finger around the top of the glass till it sings a note. If you emit sound waves at this frequency in the dir...

Light from the sun is white. As it passes through the Earth's atmosphere, the different wavelengths of white light (i.e. the visible spectrum of colours) are scattered by gas and dust particles. Colours w...

Since force = mass x acceleration, acceleration = 4 as the change in velocity is 4 m/s and m = 45 as the mass of Hannah is 45 kg and hence the force required to be exerted on her is 4*45 which is 180N.