What is the tme of a 575 kg roller coaster car that is at rest 50 m above the lowest point on the ride? the maximum possible speed of the roller coaster is 31.3 m/s.

What is the relationship between the direction of motion of the balloon and the wind currents

Astudent weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. the average power expended by the student to overcome gravity is most nearly

Frequency of electromagnetic waves that a radio station is assigned. what do you call this type of wave?