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3 years ago

How many times will a skydiver reach terminal velocity before landing on the ground?.......... A. 0 B. 1 C. 3 D. 2

Physics

1 answer:

ludmilkaskok [199]3 years ago

5 0

Answer:

D. 2

Explanation:

The skydiver will reach terminal velocity when gravity = air resistance. When this occurs, he/she will no longer accelerate and his/her speed will be constant.

Once the skydiver opens the parachute, his/her speed will decrease suddenly, and again the air resistance increases due to the parachute's large area. Eventually, gravity will equal air resistance again and terminal velocity will be reached for the second time.

Even though the speeds are different, the first terminal velocity is much higher than the second one, this question refers to how many times terminal velocity is reached, not how many times the skydiver accelerates.

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Answer:

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Explanation:

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3 years ago

A 2.2 kg model rocket is shot straight up in the air from the ground, with an initial velocity of 36.4 m/s. The rocket reaches i

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Answer:

Explanation:

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2 years ago

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Read 2 more answers

In a circus act, a uniform board (length 3.00 m, mass 25.0 kg ) is suspended from a bungie-type rope at one end, and the other e

tester [92]

Answer:

Force of Rope = 122.5 N

Force of Rope = 480.2N

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given data

length = 3.00 m

mass = 25.0 kg

clown mass = 79.0 kg

angle = 30°

solution

we get here Force of Rope on with and without Clown that is

case (1) Without Clown

pivot would be on the concrete pillar so Force of Rope will be

Force of Rope × 3m = (25kg)×(9.8ms²)×(1.5m)

solve it and we get

Force of Rope = 122.5 N

and

case (2) With Clown

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4 years ago

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