A boller coaster, mass=560kg, is moving over
the crest at point A with a speed
of 5.0 m/s. What is it's speed at point B?
(G. R.A. S.S.)​

Adelivery truck leaves a warehouse and travels 2.60 km north. the truck makes a left turn and travels 1.25 km west before making another right turn to travel 1.40 km north to arrive at its destination. what is the magnitude and direction of the truck's displacement from the warehouse?

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.