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AP® Physics 1 & 2

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Difficult

Acceleration Drones On

APPH12-D1BGEO

A $5.00\text{ kg}$ drone is momentarily stationary $50.0\text{ m}$ above a level parking lot. Its orientation produces an upward thrust of $52.0\text{ N}$ at an angle of $30.0\text{ degrees}$ to the left of the vertical as shown below.

Assuming the thrust and orientation remains constant, how long will it take (in seconds) for the drone to touch the parking lot?

Ignore air resistance and the mass of the fuel.

A

$3.19\text{ seconds}$

B

$4.67\text{ seconds}$

C

$11.2\text{ seconds}$

D

Because the thrust ($52.0\text{ N}$) is more than the weight of the drone ($49.0\text{ N}$), the drone would not touch the parking lot as long as the conditions remained as stated.