Physics, 17.09.2019 22:20 hardwick744
Aquarterback is set up to throw the football to a receiver who is running with a constant velocity vr directly away from the quarterback and is now a distance d away from the quarterback. the quarterback figures that the ball must be thrown at an angle a to the horizontal and he estimates that the receiver must catch the ball a time interval tc after it is thrown to avoid having opposition players prevent the receiver from making the catch. in the following you may assume that the ball is thrown and caught at the same height above the level playing field. assume that the y coordinate of the ball at the instant it is thrown or caught is y=0 and that the horizontal position of the quaterback is x=0.use g for the magnitude of the acceleration due to gravity, and use the pictured inertial coordinate system when solving the problem. a) find voy, the vertical component of the velocity of the ball when the quarterback releases it. express your answer for voy in terms of tc, and g. b) find vox, the initial horizontal component of velocity of the ball. express your answer for vox in terms of d, tc, and vr. c)find the speed vo with which the quarterback must throw the ball. answer in temrs of vr g tc and dd) assuming that the quarterback throws the ball with speed vo, find the angle a above the horizontal at which he should throw it.
Answers: 1
Physics, 21.06.2019 16:50
12 drag each label to the correct category. decide whether each statement describes mass or weight. measured in newtons measured in kilograms does not change when gravity changes === a gravitational force changes when gravity changes the amount of matter in something mass weight
Answers: 1
Physics, 22.06.2019 01:30
Question 7 [2 marks] in the circuit below, the electromotive force generated by the battery is e = 6.0 v, and the resistances are r1 = r4 = 1.0 q, r2 = r3 =2.0 q. r. the power delivered by the battery to the circuit is closest to a. 6 w в. 12 w с. 15 w d. 18 w e. 20 w final exam autumn 2014 page 5 of 9 68037 physical modelling faculty of science [2 mark] question 8 with reference to question 7, the current through resistor r2 is closest to a. 1 a в. 2 а c. 3 a d. 4 a e. 6 a
Answers: 2
Aquarterback is set up to throw the football to a receiver who is running with a constant velocity v...
Mathematics, 22.06.2019 04:00
Mathematics, 22.06.2019 04:00
Social Studies, 22.06.2019 04:00
Mathematics, 22.06.2019 04:00
English, 22.06.2019 04:00
English, 22.06.2019 04:00
Mathematics, 22.06.2019 04:00
Mathematics, 22.06.2019 04:00
Mathematics, 22.06.2019 04:00
Mathematics, 22.06.2019 04:00
Mathematics, 22.06.2019 04:00
Biology, 22.06.2019 04:00
Biology, 22.06.2019 04:00
Computers and Technology, 22.06.2019 04:00