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antoniya [11.8K]
3 years ago
14

Convert 4 radians to degrees A. 242.6° B. 9.6° C. 229.2° D. 6.8°

Physics
2 answers:
muminat3 years ago
8 0
The central angle of a circle is 360° or 2π radians.

Therefore
1 radian = (360 degrees)/(2π radians) = 180/π degrees/radian.
4 radians = (4 radians)*(180/π degrees/radian) = 229.18 degrees.

Answer: C.  229.2°
saveliy_v [14]3 years ago
5 0
C 229.2 is the answer because of pie
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Answer:

a) During the reaction time, the car travels 21 m

b) After applying the brake, the car travels 48 m before coming to stop

Explanation:

The equation for the position of a straight movement with variable speed is as follows:

x = x0 + v0 t + 1/2 a t²

where

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When the speed is constant (as before applying the brake), the equation would be:

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a)Before applying the brake, the car travels at constant speed. In 0.80 s the car will travel:

x = 0m + 26 m/s * 0.80 s = <u>21 m  </u>

b) After applying the brake, the car has an acceleration of -7.0 m/s². Using the equation for velocity, we can calculate how much time it takes the car to stop (v = 0):

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