The diagram above illustrates the motion of a cyclist from P to R. The distance travelled is determined by the
A ray of light travels from a less dense medium to a denser medium. How are the speed and frequency of the light affected? The speed
The function of a fuse in an electric circuit is to
A body moves with uniform velocity when the resultant force on it is
The law of conservation of momentum is stated for closed and isolated system. What are the two conditions for a system to be closed and isolated?