subject
Physics, 18.02.2020 03:11 tylerwoodson

A major league baseball pitcher throws a pitch that follows these parametric equations: x(t) = 142t y(t) = –16t2 + 5t + 5. The time units are seconds and the distance units are feet. The distance between the location of the pitcher and homeplate (where the batter stands) is 60.5 feet. Give EXACT answers, unless instructed otherwise. (a) Calculate the horizontal velocity of the baseball at time t; this is the function x'(t)= 142 Correct: Your answer is correct. ft/sec. (b) What is the horizontal velocity of the baseball when it passes over homeplate? 142 Correct: Your answer is correct. ft/sec (c) What is the vertical velocity of the baseball at time t; this is the function y'(t)= $$−32t+5 Correct: Your answer is correct. -32t +5 ft/sec. (d) Recall that the speed of the baseball at time t is s(t)=√ [x '(t)]2 + [y ' (t)]2 ft/sec. What is the speed of the baseball (in mph) when it passes over homeplate? $$1 Incorrect: Your answer is incorrect. (sqrt(142*142 +((-1936/142) + 5)**2)*(360/528)) mph. (e) At what time does the baseball hit the ground, assuming the batter and catcher miss the ball? $$1.1 Incorrect: Your answer is incorrect. (5+sqrt(5**2 + 320))/32 sec. (f) What is the magnitude of the angle at which the baseball hits the ground? 0.12 Incorrect: Your answer is incorrect. rad. (This is the absolute value of the angle between the tangential line to the path of the ball and the ground. Give your answer in radians to three decima

ansver
Answers: 2

Another question on Physics

question
Physics, 22.06.2019 13:20
Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.
Answers: 1
question
Physics, 22.06.2019 20:20
Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.
Answers: 3
question
Physics, 22.06.2019 21:30
Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.
Answers: 3
question
Physics, 22.06.2019 23:00
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
You know the right answer?
A major league baseball pitcher throws a pitch that follows these parametric equations: x(t) = 142t...
Questions
question
Geography, 09.09.2020 22:01
question
Physics, 09.09.2020 22:01
Questions on the website: 13722361