Physics, 16.10.2021 23:40 bobduncan15
Phương trình chuyển động của một chất điểm trong hệ tọa độ Oxy là x =2t (cm); y= 3t2 (cm). Khoảng cách từ chất điểm đến gốc toạ độ tại thời điểm t = 2s là : A. 12, 65 cm. B.40cm. C. 52 cm. D. 7, 21 cm.
Answers: 3
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An astronaut floating in space is trying to use her jetpack to get back to her space station, but she is being pulled away by a nearby planet, as shown in the image below. her jetpack provides a constant thrust of 310 n. if she angles her jetpack in such a way that it cancels out the vertical force due to the planet's gravity, what is her net horizontal force? thaud 487 o a. 54.8 n toward the space station o b. 212.9 n toward the space station o c. 185.2 n toward the space station o d 956 n toward the space station
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Phương trình chuyển động của một chất điểm trong hệ tọa độ Oxy là x =2t (cm); y= 3t2 (cm). Khoảng cá...
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