a.what is speed ?
b. what is time period?
c. what is reflection ?
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Explanation:
a)In everyday use and in kinematics, the speed of an object is the magnitude of the change of its position; it is thus a scalar quantity. Wikipedia
SI unit: m/s, m s−1
Common symbols: v
Dimension: L T−1
B)Time period : The time required by a body exhibitting periodic motion to complete one period is known as the time period. The S.I. unit is second. Frequency : The number of times a body exhibits unique motion (each period) in one second is known as frequency.
c)an image that you see in a mirror, in water or on a shiny surface
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