Physics, 10.09.2019 03:30 lauryngrace37
Atennis ball is dropped from a height of 10.0 m. it rebounds off the floor and comes up to a height of only 4.00 m on its first rebound. (ignore the small amount of time the ball is in contact with the floor.) (a) determine the ball’s speed just before it hits the floor on the way down. (b) determine the ball’s speed as it leaves the floor on its way up to its first rebound height. (c) how long is the ball in the air from the time it is dropped until the time it reaches its maximum height on the first rebound?
Answers: 2
Physics, 22.06.2019 18:00, Yungnaudie
Astudent weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. the average power expended by the student to overcome gravity is most nearly
Answers: 2
Physics, 22.06.2019 23:00, thickbeanpapi
Two horses begin at rest. after a few seconds, horse a is traveling with a velocity of 10 m/s west, while horse b is traveling with a velocity of 13 m/s west. which horse had a greater acceleration? a. horse a because its change in velocity was greater than horse b's in the same time. b. horse b because its change in velocity was greater than horse a's in the same time. c. horse b because its change in velocity was the same as horse a's, but it took less time. d. both horses had the same acceleration.
Answers: 1
Physics, 22.06.2019 23:30, sksksjs
1. explain how you calculate the net force in any direction on the box. 2. suppose an upward force of 15n is added to the box. what will be the net vertical force on the box? 3. what force could be applied to the box to make the net force in the horizontal direction zero? explain. 4. suppose a force of 25n to the right is added to the box. what will be the net force to the right?
Answers: 3
Atennis ball is dropped from a height of 10.0 m. it rebounds off the floor and comes up to a height...
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