When an object moves in a straight line at constant speed, it is said to be moving with uniform motion. When a car travels at a steady speed, resistive forces such as air resistance as well as frictional forces in automobile's moving parts balance the engine's driving power.
Question : Which of the following is correct about uniform acceleration?
Option 1: An object moving on a frictionless surface can gain uniform acceleration.
Option 2: An object in free fall is an example of uniform acceleration.
Option 3: An object moving with constant speed is an example of uniform acceleration.
Option 4: The motion of a spring is an example of uniform acceleration.
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