Question

Q.

65.

Explanation acceleration in Long answer ??​

Answer 1

• Acceleration is defined as the rate of change of velocity per unit time

a = (v-u)/t

• SI unit of acceleration is m/s² since SI unit of velocity is m/s and time is s

a = (m/s)/s

a = m/s²

• The rate of decrease in velocity per unit time is called retardation. i.e. negative acceleration.
• The velocity-time graph or V-I graph or V/I graph gives the acceleration.
• Acceleration is uniform when V/I graph is a straight line.Uniform Acceleration can be defined as the equal changes in velocity in equal intervals of time.
• Acceleration is said to be non-uniform or variable when V/I graph is a curve (hyperbola). The non-uniform motion or variable accleration is defined as unequal changes in velocity in unequal intervals of time.

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Answer 2

• Acceleration (a) is defined as the rate of change of velocity. Velocity is a vector quantity, and therefore acceleration is also a vector quantity. The SI unit of acceleration is metres/second2 (m/s2).