15 J of work were expended moving an 18 kg block. At what velocity did the block move?

What’s #16 asking me and how do i solve it?

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?

Calculate the volume of this regular solid. what is the volume of the cone? round your answer to the nearest hundredth