Which of the following statements best describes the principle of conservation of mechanical energy?
Question 2
2.
If a pendulum is swinging back and forth in the absence of air resistance, at what point is its kinetic energy at its maximum?
Question 3
3.
Which of the following is NOT an example of a situation where mechanical energy is conserved?
Question 4
4.
A 2 kg block is released from rest at a height of 5 meters above the ground. Assuming no energy is lost to air resistance, what is the speed of the block just before it hits the ground? (Use g = 9.81 m/s²)
Question 5
5.
A 1 kg mass is moving at a speed of 3 m/s on a frictionless surface when it collides with a spring with a spring constant of 300 N/m. What is the maximum compression of the spring?
Question 6
6.
A ball is thrown vertically upward. Ignoring air resistance, which of the following is true about the ball’s mechanical energy at its highest point?