Problem 4: A jet airliner movin
102 mi/h in a
nitiaily at 3.00 x 102 mi/h due east enters a region where the wind is blowing 1.00 x
30 0° north of east.
a)
Find th components of the velocity of the jet airliner relative to the air, VA
b) Find the components of the velocity of the air relative to Earth,
c)write an equation relating the velocities
d)What are the speed and direction of the aircraft relative to the ground?

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered

answer: the potential energy decreases from 379 j to 243 j

explanation:

for the law of conservation of energy, the total energy in a system must be conserved. the total energy of the system is given by the sum of kinetic (k) and potential (u) energy:

e = k + u

the total energy is e=675 j, and this does not change.

initially, the kinetic energy is k=296 j, so the potential energy is

at the end, the kinetic energy is k=432 j, so the potential energy is

so, we see that the potential energy has decreased from 379 j to 243 j.