Aroller coaster is moving at 30 mi./s at the bottom of the hill for seconds later which is the top of the hill moving at 10 m/s what is the acceleration of the coaster

Asap i'm in class rn a 1,000-kg car is traveling 20 m/s on a flat stretch of road. it gets to a hill and coasts uphill until it stops. how high up the hill does the car travel? givens: equation: 1/2mv2initial=mghfinal solve for h. plug & chug, label.

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

Select all the correct answers. which three statements about electromagnetic radiation are true?