Based on the diagram of a ball rolling down hill, what statement is true? les
A)
The ball in box Chas less kinetic energy than ball in box B.
B
The ball in box A has less kinetic energy than the ball in box B.
The ball in box Chas less kinetic energy than the ball in box D.
D)
The ball in box A has equal amounts of potential and kinetic energy

The man fires an 80 g arrow so that it is moving at 80 m/s when it hits and embeds in a 8.0 kg block resting on ice. how far will the block slide on the ice before stopping? a 7.1 n friction force opposes its motion.

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories