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Question
Figure represents graphically the velocity of a car moving along a straight road over a period of 100 hours.
How long is the body travelling with a uniform velocity?
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Solution
Body is travelling with uniform velocity from point A to B i.e for (40 - 20) = 20 hr.
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Exercise Problems.
A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 ms–2, with what velocity will it strike the ground? After what time will it strike the ground?
Speed of the body in a particular direction can be called ______.
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If the final velocity is less than the initial velocity the acceleration is ______.
Assertion: An object can have constant speed but the variable velocity
Reason: Speed is a scalar but velocity is a vector.
Distinguish between speed and velocity.
Define velocity.
Distinguish between speed and velocity.
