CALCULATE: A roller coaster with a mass of 100 kilograms needs to be accelerated at 15m/s² along the track in order to move. How much force is
needed to move the coaster?

Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]

Atelevision set that has been running for a while heats up even the air around it. which two laws of thermodynamics could be used to analyze this scenario

Which sound characteristic is not affected by the relative motion of an object