A comet moving 564 km per minute traveling in an east-to-west direction passed near Earth in 1995. The comet was 15,780 km above Earth’s surface and visible with a telescope. Which statement best describes the comet’s motion? A. Its speed was 564 km/min

B. Its acceleration was 564 km/s2

C. Its velocity is 564 km/min eastward.

D. Its acceleration was 9.4 km/s

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

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)