Aroller coaster car is on a track that forms a circular loop in the vertical plane. if the car is to just maintain contact with the track at the top of the loop, what is the value of its centripetal acceleration at that point?

An object is moving east, and it’s velocity changes from 65m/s to 25m/s in 10 seconds. which describes the acceleration?

Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is