Physics, 17.09.2019 21:10 sarahalexa19
Afew years ago, serena williams dived to hit a tennis ball right after it bounced off the ground. the ball bounced on the ground 11.7 m from the net, and after serena hit the ball it flew over the 0.950 m high net and bounced in her opponent's court about 1.21 s after she hit it. if there had been no gravity, the ball would have been 2.63 m higher than the net when it crossed over. how fast was the ball moving when it left serena's racket?
Answers: 3
Physics, 22.06.2019 11:00
1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?
Answers: 1
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Physics, 22.06.2019 15:00
You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d
Answers: 1
Afew years ago, serena williams dived to hit a tennis ball right after it bounced off the ground. th...
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