If a 46 g tennis ball is hit by a racket that makes an angle of 45 degrees with the horizontal. The tennis ball lands 200 m away from the point it is thrown. What is the average force of impact, if the tennis ball and racket are in contact for 7 ms? (g=9.8 m/s^2) Answer Choices: A) 1165.6 N B) 874.2 N C)582.8 N D) 291.4 N E)145.7 N

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Jason is a body builder. despite being more fit, he weighs more than his brother ryan, who is the same height. which is a possible reason? a. jason has more muscle mass than ryan does. b. jason has more body fat than ryan does. c. jason has more muscle mass and body fat than ryan does d. jason has less body fat than ryan does.

The two required components for a generator are

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)