Acar traveling at 60 km/h will skid 30 m when its brakes are locked. if the same car is traveling at 180 km/h, what will be the skidding distance? be sure to show all work to support your answer.

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.