BrainGeek4848
10.09.2020 •
Physics
A test car travels in a straight line. The graph in the figure shows the car's position x as a function of time. Find its instantaneous velocity at Point E.
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Ответ:
■
a = 141°
b = 13°
c = 26°
■ Step-by-step explanation:
a = 128 + b
c = 2b
a + b + c = 128
replace a & c
(128 + b) + b + 2b = 180
4b = 180 - 128
4b = 52
b = 13°
a = 128° + 13° = 141°
c = 2×13° = 26°