Question : What is speed?
Option 1: It is the distance covered by an object in a unit of time
Option 2: It is the velocity of an object per unit time
Option 3: It is the force applied on covering a unit distance
Option 4: It is the acceleration of an object per unit time
Correct Answer: It is the distance covered by an object in a unit of time
Solution : The correct option is It is the distance covered by an object in a unit of time.
Speed is the distance travelled by an object per unit of time. It quantifies how quickly or slowly an object moves and is a scalar quantity, meaning it only has magnitude (not direction). If the direction of motion is also considered, it becomes velocity.
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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.
Question : The motion of a body around a circular path is an example of
Option 1: Uniform velocity, variable acceleration
Option 2: Uniform speed, uniform velocity
Option 3: Uniform speed, variable velocity
Option 4: Uniform speed, variable acceleration
Question : Power exerted by an object moving in a straight line is equal to force multiplied by ______.
Option 1: displacement
Option 2: velocity
Option 3: work
Option 4: acceleration
Question : If a body moves with a constant speed in a circle:
Option 1: no work is done on it
Option 2: no force acts on it
Option 3: no acceleration is produced
Option 4: its velocity remains constant
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