Physics, 26.06.2020 18:01, evanwall91

A hot-air balloon is drifting in level flight due east at 2.9 m/s due to a light wind. The pilot suddenly notices that the balloon must gain 20 m of altitude in order to clear the top of a hill 100 m to the east. (a) How much time does the pilot have to make the altitude change without crashing into the hill?
(b) What minimum constant upward acceleration is needed in order to clear the hill?
(c) What are the horizontal and vertical components of the balloon's velocity at the instant that it clears the top of the hill?

Answers: 3

Show answers

Other questions on the subject: Physics

Physics, 21.06.2019 13:30, paulitaaustin

An astronomer at the equator measures the doppler shift of sunlight at sunset. from this, she calculates that earth’s tangential velocity at the equator is 465 m/s. the centripetal acceleration at the equator is 3.41  10 2 m/s 2 . use this data to calculate earth’s radius.

Answers: 3

continue

Physics, 22.06.2019 03:00, 03babyj

Which of the following is an example of units for speed

Answers: 1

continue

Physics, 22.06.2019 04:30, angie249

The pressure increases by 1.0 x 104 n/m^2 for every meter of depth beneath the surface of the ocean. at what depth does the volume of a pyrex (bulk modulus 2.6 x 1010n/m^2) glass cube, 9.8 x 10^−2m on an edge at the ocean's surface, decrease by 7.5 x 10−10m^3? explain the formula beyond this point: p=1.0x10^4, b=2.6x10^10, l=9.8x10^−2, delta v=7.5x10^−10. at some point l needs to be cubed. why p is divided by delta v?

Answers: 2

continue

Physics, 22.06.2019 10:10, sadie960

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.

Answers: 1

continue

Do you know the correct answer?

A hot-air balloon is drifting in level flight due east at 2.9 m/s due to a light wind. The pilot sud...