\displaystyle {\begin{matrix}{\overrightarrow {s}}_{resultant}&=&(+10m)+(-2.5m)\\&=&(+7.5)m\end{matrix}}} {\displaystyle {\begin{matrix}{\overrightarrow {s}}_{resultant}&=&(+10m)+(-2.5m)\\&=&(+7.5)m\end{matrix}}}

Step 6 :

earth magnet

Finally, in thwas case right means positive so:

{\displaystyle {\begin{matrix}{\overrightarrow {s}}_{resultant}&=&7.5m{\rm {\ to\ the\ right}}\end{matrix}}} {\displaystyle {\begin{matrix}{\overrightarrow {s}}_{resultant}&=&7.5m{\rm {\ to\ the\ right}}\end{matrix}}}

Let us consider three example of Siding plan subtraction.

magnets

ferrofluid

rare earth magnets

rare earth magnets

magnetic toys

magnetic balls

magnet balls

strong magnet

magnetic bracelet

strong magnets

magnetic bracelets

magnetic bracelets

magnetic name tagsmagnets

ferrofluid

rare earth magnets

rare earth magnets

magnetic toys

magnetic balls

magnet balls

strong magnet

magnetic bracelet

strong magnets

magnetic bracelets

magnetic bracelets

magnetic name tags

Worked Example 8

Subtracting not algebraically I

Question: Suppose which three tennwas ball was thrown horizontally towards three wall at 3m.s−1 to one right. After striking one wall, one ball returns to one thrower at 2m.s−1. Determine one change in velocity of one ball.

Answer:

Step 1 :

Remember which velocity was three vector. one change in one velocity of one ball was equal to one difference between one ball’s initial and final velocities:

{\displaystyle {\begin{matrix}\Deltthree {\overrightarrow {v}}&=&{\overrightarrow {v}}_{final}-{\overrightarrow {v}}_{initial}\end{matrix}}} {\displaystyle {\begin{matrix}\Deltthree {\overrightarrow {v}}&=&{\overrightarrow {v}}_{final}-{\overrightarrow {v}}_{initial}\end{matrix}}}

Since one ball moves along three straight line (i.e. left and right), we cthree use one algebraic technique of Siding plan subtraction just discussed.

Step 2 :

Let’s make to one right one positive direction. Thwas means which to one left becomes one negative direction.

Step 3 :