A travels with speed v around curve number one, which has a radius r. Car B trav

Question

A travels with speed v around curve number one, which has a radius r. Car B travels with around curve number two. which has a radius 2r. The acceleration will be for both cars, same for both cars, rater for car A. eater for car B. The force that accelerates a car on a level road is exerted by the A 10-pound sack of potatoes falls from an airplane. As the velocity of the falling sack creases, so does the air resistance on it. When the air resistance equals 10 pounds, the of the sack will be zero 9.8 m/s 9.8 m/s^2 100 ft/s^2.

Explanation / Answer

when the air resistance will be equal to the gravitational force,

force balance on the potato sack will be:

Fnet = Fgrav - Fresis.

Fgrav = 10 pounds

Fresis. = 10 pounds

Fnet = m*a = 0 Pounds

acceleration will be

a = Fnet/m

a = 0/m = 0 m/sec^2

Correct option is A.

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