A) A stationary object is acted upon by a number of forces. State the conditions which must be true if the object

(I) Doesn’t accelerate
(II) doesn’t rotate

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)]

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

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