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Let us consider a simple dc circuit consisting of a battery and a resistor connected by ideal wires. As we know, current starts to flow thorugh the resistor and heat is generated as a result of this cu...

We know the formula for kinetic energy is

KE = (1/2)mv².

If we know that c, the speed of light, is 3x10⁸ms^-1 (you will be given this value i...

Water stays in the bucket for the same reasons that we stay in our seats when we do a loop on a rollercoaster. Another example is being driven round a roundabout and feeling a 'force' pushing you outwa...

In order to solve this question we need to use the principle of conservation of momentum which states:

The momentum in a closed system remains constant before and after a collision or exp...

Firstly, acceleration is the rate of change of velocity of an object, measured in ms^-2 (read as metres per second squared, or metres per second per second). It can be either positive, indicatin...