Two banked curves have the same radius. curve a is banked at 12.7 °, and curve b is banked at an angle of 15.1°. a car can travel around curve a without relying on friction at a speed of 19.1 m/s. at what speed can this car travel around curve b without relying on friction?

Work = force × a. work b. energy c. distance d. momentum

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p

Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match