Apex
in an isolated system, two cars, each with a mass of 2,500 kg, collide. car 1 is
initially at rest, while car 2 was moving at 20 m/s. what is their speed after
the collision?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to: