This question is typical on some driver's li-
cense exams: a car moving at 50 km/h skids
15 m with locked brakes.
how far will the car skid with locked brakes
at 125 km/h? assume that energy loss is due
only to sliding friction.
answer in units of m.

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

What property of an object determines its inertia?

Object a has a length of 3 cm, a width of 2 cm, and a height of 4 cm. object b is dropped into a graduated cylinder. it displaces 19 ml of water. the volume of object a is: a: greater than the volume of object b b: less than the volume of object b c: equal to the volume of object b