10. \( v^{2}=u^{2}+2 a \) s is a formula used to find velocity. Work out the velo \( \begin{array}{ll}\text { a) } u=8, a=3, s=6 & \text { b) } u=10, a=11, s=2 \\ \text { c) } u=5, a=7, s=4 & \text { d) } u=7, a=9, s=4 \\ \text { e) } u=8, a=\frac{3}{2}, s=12 & \text { f) } u=12, a=5, s=\frac{5}{2}\end{array} \)

Water flows through a tube of diameter 2 cm at an average speed of \( 3 \mathrm{~m} / \mathrm{s} \). The end of the tube is closed with a plug with ten holes, each with a radius of 1 mm , calculate the speed of the water flowing from each hole

Gasoline flows in a tube with a diameter of 2 cm at a speed of \( 5 \mathrm{~m} / \mathrm{s} \). Calculate: (a) The amount of gasoline flowing per minute. (b) The time required for a tank with a capacity of \( 20 \mathrm{~m}^{3} \) to be filled with gasoli (knowing that \( \pi=3.14 \) )

\( \begin{array}{ll}3.33 \text { • Uma canoa tem velocidade de } 0,40 \mathrm{~m} / \mathrm{s} \text { a sudeste em } & \text { Pa } \\ \text { relação à Terra. A canoa se desloca em um rio que escoa a } \\ 0,50 \mathrm{~m} / \mathrm{s} \text { para leste em relação à Terra. Determine o módulo, } \\ \text { a direcão e o sentido da velocidade da canoa em relacão ao rio. }\end{array} \)

6) Oil flows through a tube at a rate of \( 6 \mathrm{Liter} / \mathrm{min} \), another tube is connected to it and the oil comes out of its nozzle at a speed of \( 4 \mathrm{~m} / \mathrm{s} \), calculate the cross-sectional area of the second tube 7) Water flows through a tube of diameter 2 cm at an average speed of \( 3 \mathrm{~m} / \mathrm{s} \). The end of

The amount of force, \( F \), needed to lift an object using a lever varies inversely as the length, \( l \), of the lever. When a 24 -inch lever is used, a force of 240 pounds is needed. How much force is needed if a 36 -inch long lever is used? A. 120 pounds B. 160 pounds C. 252 pounds D. 360 pounds