Which arrow indicates the direction of gravitational force on the object, represented by the black dot? Which arrow indicates the direction of centripetal force on the object, represented by the black dot?

How much force must a locomotive exert on a 12840-kg boxcar to make it accelerate forward at 0.490 m/s2?

Akg a of 55 m at an of 11 ? . if is at 98 km/h,be ?

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.