4. The kinetic energy (KE) and gravitational potential energy (PE) for an object are shown as functions of time in the graph on the right. What is the change in total mechanical energy of the object for the 5 seconds shown? (A) 0 J
(B) 2.5 J
(C) 5 J
(C) 5 J

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.

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?