A 1400 kg roller coaster is moved to the top of a track that is 100 m above the lowest part of the track. What is the GPE of the coaster?

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Frank just graduated from eighth grade. assuming exactly four years from now he will graduate from high school how many seconds does he have until his high school graduation

Which sections of the heating curve illustrate this process?