Ajet engine generates 160 kn of force as it propels a 20,000kg plane down a runway. if 40 kn of friction opposes the plane, how much time it will take the plane to reach a speed of 33 m/s from rest

Avehicle has an oil leak that is causing the entire oil pan to be wet, but inspection reveals no exact source after cleaning off the oil residue. technician a says to install a fluorescent dye in the crankcase and operate the engine, then re-inspect for leaks with a special light (black light). technician b says the oil leak may be coming from a source at the top of the engine, such as a valve cover gasket. who is correct?

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.