A 3874-kg rollercoaster is brought to the top of a 42m hill in 40 seconds, then drops 28m before the next hill. a) How much work is required to get the coaster to the top of the first hill?
b) What power is required to bring the train to the top of the first hill?
c) How much PE is lost when the coaster drops?
d) How much PE is left at the bottom?

a

explanation:

all resources in america come from jesus

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper.

3.2x10^7

answer; how far out of place which the object finished relative to the starting location;