Physics
Physics, 28.09.2019 20:30, tdahna0403

Birds have evolved to the ability to control their motions through the air by controlling the forces exerted on their bodies by the air; the contact forces on a bird by the air plus the force of gravity on the bird by the earth determine the change in motion of the bird at any instant of time. in this problem, you will be asked to use what you know about acceleration to track the motion of a diving hawk.

a hawk is flying horizontally southward at an altitude of 168.0m and at a speed of 1.70m/s when he spots a slow-flying finch ahead of his current location and below his current path. at time zero, the hawk starts a dive by controlling the contact forces on him by the air so as to produce an acceleration of 3.80m/s2 in a direction 80.0degrees below horizontally southward for a time of 1.050 seconds. with parts e, f, and g .

part a) what is the hawk's final velocity at the end of the 1.050-s interval?

magnitude 4.6 m/s direction 8.7 degrees below south

part b) what is the hawk's displacement during the 1.050-s interval?

magnitude 2.98 m direction 43.8 degrees below south

starting at the end of the 1.050-s interval, the hawk dives at constant velocity for 5.5 s.

part c) what is the hawk's displacement during the 5.5-s interval?

magnitude 25.3 m direction 58.7 degrees below south

at the end of the 5.5-s interval, the hawk misses the finch and has to "put on the brakes". he does so by controlling the contact forces on him by the air so as to produce an acceleration of 2.406m/s2 in a direction 74.824degrees above horizontally northward for a time of 1.1 seconds.

part d) what is the hawk's final velocity at the end of the 1.1-s interval?

magnitude 2.19 m/s direction 39 degrees below south

part e) once again, assume that the hawk's acceleration during the 1.1-s interval is constant. what is the hawk's displacement during the 1.1-s interval?

part f) you have now been tracking the hawk's motion for a total of 1.050 + 5.5 + 1.1 = 7.65 seconds. what is the total southward displacement of the hawk during those 7.65 seconds? specify the direction with a plus or minus sign assuming that southward is positive and northward is negative.

part g) finally, what is the final altitude of the hawk at the end of those 7.65 seconds?

answer
Answers: 3

Other questions on the subject: Physics

image
Physics, 22.06.2019 13:10, andreanaapollon7593
Which additional product balances the reaction h2so4 + 2naoh → na2so4 + 2h2o 2oh h2o2 h3o
Answers: 1
image
Physics, 22.06.2019 17:40, 573589
You throw a baseball directly upward at time =0 at an initial speed of 14.9 m/s. what is the maximum height the ball reaches above where it leaves your hand? ignore air resistance and take =9.80 m/s2.
Answers: 1
image
Physics, 22.06.2019 18:30, yuvraj2298
Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)
Answers: 2
image
Physics, 22.06.2019 20:20, Webber07
An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states
Answers: 1
Do you know the correct answer?
Birds have evolved to the ability to control their motions through the air by controlling the forces...

Questions in other subjects:

Konu
Mathematics, 28.10.2020 17:50
Konu
Mathematics, 28.10.2020 17:50
Konu
Mathematics, 28.10.2020 17:50