Roland throws a 0.05 kg egg with a velocity of 10 m/s to the right. The egg hits a wall and breaks. Which of the following is true?
O
A. Momentum is not conserved because outside forces act on the
system.
B. The total momentum before the collision equals the total
momentum after the collision.
C. The momentum of the wall after the collision is 0.5 kg-m/s to the
right.
D. The momentum of the egg after the collision is 0.5 kg-m/s to the
left.

The eel has a certain amount of rotational kinetic energy when spinning at 14 spins per second. if it swam in a straight line instead, about how fast would the eel have to swim to have the same amount of kinetic energy as when it is spinning?

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i.e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i.e. include the distance traveled to the first encounter)