6) A force Fis exerted on a 5 kg block to move it across a rough surface, as 1 point

shown. The magnitude of the force is initially 5 N, and the block moves at a

constant velocity. While the block is moving the force is instantaneously

increased to 12 N. How much kinetic energy does the block now gain as it

moves a distance of 2 m?*

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)