A10g ball is launched straight up in the air using a spring loaded projectile launcher similar to the one you used earlier this semester. the launcher is essentially a hollow tube with a spring inside. the sping length is the same as the tube length , 12cm. when the ball is loaded , the spring is compressed to 4 cm. the diameter of the ball and that of the tube are almost identical such that the ball is in contact with the walls as it moves up the tube. this introduces a 10% energy loss due to friction what is the velocity of the ball when it leaves the launcher? enter your answer in m/s.

Suppose an objects initial velocity is 10m/s and it’s final velocity is 4 m/s. mass is constant. what can best be concluded about the object based in the work-energy theorem

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?

3. a worker pushes a 30.5 kg polished stone along a polished table with a force on bonin a straight line for 5.20 s after starting from rest. there is no friction between thestone and the table. at the end of the table. the stone is hooked to a cable with a lengthof 62.0 cm to rotate it to a rough table to store until they can be picked up. the roughtable has a coefficient of static friction 0.702 with the polished stone. remember that 8= 9.80 m/s2a) what is the speed of the stone when it is hooked to the cable? b) what is the tension in the cable while the stone is rotating? (there is still nofriction)c) how much force is needed to make the stone begin sliding from rest on therough table? ius = 0.70262.0 cm30.5 kg20.5 kg6= 0