2 . The velocity v ms
�1
v( t) � 2.5t �5.6 t � 2 , for 0�t
� 5.
of an object after t seconds is given by
( a ) On the grid below , sketch the graph of v , clearly indicating the minimum point .
v
[ 3 ]
2
O 5 t
� 2
Let d be the distance travelled in the first five seconds .
( b ) ( i ) Write down an expression for d .
( ii ) Hence , write down the value of d . [ 4 ]
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