Question

Assertion: Motion with uniform velocity is always along a straight-line path. Reason: In uniform velocity a motion, speed is the magnitude of the velocity and is equal to the instantaneous velocity.

Answer 1

Answer:

Solution : When a body is moving with a uniform velocity, it must move along a straight line in the same direction. The its uniform velocity = average velocity = instantaneous velocity . In this situation magnitude of distance is equal to displacement.

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Answer 2

Answer:

The assertion and reason both are true and reason is the correct explanation of the assertion.

Explanation:

• Uniform velocity: When an object covers equal distance in equal time interval in a particular direction, then the velocity of the object is uniform velocity.
• Uniform velocity means the velocity is constant.
• The object will move in a particular direction i.e. along straight line.
• Velocity = speed + direction = magnitude + direction
• Speed is the magnitude of velocity.
• Instantaneous velocity means velocity at a moment along a particular direction.
• As uniform velocity = instantaneous velocity. So the reason is true and the reason is correct explanation for the assertion.