2. Two villain throws a bus of mass 8900kg toward a superhero. If the bus is slin the surface at a speed of 35m/s and the hero's maximum strength is 32000N, how long would take
for the hero to stop sliding?

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.

If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?