Energy Term: Name: 1. Is mechanical energy always conserved? a. Yes b. No 2. What is the kinetic energy of a 0.5 kg European swallow flying at 15 m/s? a. 4 J b. 113 J c. 56 J d. 2 J e. 225 J 3. When a 5 kg object displaces vertically by 0.1 m, how does its gravitational potential energy change? a. 0.1 J b. 1 J C. 5 J d. 10 J e. 100 J 4. If this energy is converted to kinetic energy, how fast will the object move? a. 1 m/s b. 1.4 m/s с. 2 т/s d. 5 m/s e. 10 т/s 5. A ball of mass 0.25 kg is at rest inside a car which is travelling as 15 m/s. What is the kinetic energy of the ball with respect to the car's inertial rest frame? a. 0 J b. 1.88 J c. 14.1 J d. 28.1 J e. 56.3 J

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster th…