$(a)$ What is acceleration ? Write its $SI$ unit.

$(b)$ Draw velocity-time graph, when an object has

$(i)$ uniformly accelerated velocity

$(ii)$ uniformly retarded velocity.

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$(a)$ Acceleration is defined as the rate of change of velocity. Its $SI$ unit is $m s ^{-2}$.

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Similar Questions

A truck is moving on a straight road with uniform acceleration. The following table gives the speed of the truck at various instants of time.

Speed $\left(m s^{-1}\right)$ $5$ $10$ $15$ $20$ $25$ $30$
Time $(s)$ $0$ $10$ $20$ $30$ $40$ $50$

Draw the speed-time graph by choosing a convenient scale. Determine from it

$(i)$ the acceleration of truck

$(ii)$ the distance travelled by the truck in $50$ seconds.

Can you suggest real life examples about the motion of a body from the following velocity$-$time graphs ?

State the type of motion represented by the given graph.

Mention some uses of velocity$-$time graphs.

The following table shows the positive of Renu, while she is going to her school. Draw distance$-$time graph for her motion.

Time Distance from her home $( k m )$
$06: 45\, am$ $0$
$07: 00 \,am$ $8$
$01: 30\, pm$ $8$
$01: 45\, pm$ $0$