List two differences in tabular form between speed and velocity. When is a body said to have : (a) u

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7. MOTION

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List two differences in tabular form between speed and velocity. When is a body said to have :
$(a)$ uniform velocity and $(b)$ variable velocity. How is the average velocity of a body is calculated when its velocity changes at a non$-$uniform rate ?

Option A

Option B

Option C

Option D

Solution

For difference see chapter at a glance.

$(a)$ If a body covers equal distances in equal intervals of time in a given direction.

$(b)$ When a body travels unequal distances in equal intervals of time or its direction changes or both change.

Average velocity will found out by finding the ratio (Net displacement$/$net time).

Standard 9

Science

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