Physics, 25.07.2021 14:00 amandapill
Hai xe xuất phát cùng lúc tại hai vị trí A B cách nhau 20 km chuyển động từ A đến B với vận tốc lần lượt là v = 60 km h v b = 50 km h a lập phương trình chuyển động B tìm vị trí thời điểm hai xe gặp nhau c vẽ đồ thị tọa độ thời gian của 2 xe trên một hệ trục d xác định vị trí thời điểm hai xe cách nhau 100 km
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Jasmine is diving off a 3-meter springboard. her height in meters above the water when she is x meters horizontally from the end of the board is approximated by the equation h=-x^2+3x+3. what is the maximum height jasmine will reach on her dive?
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Physics, 22.06.2019 12:30
As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?
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Physics, 22.06.2019 23:30
Aball of mass 0.3kg is released from rest at a height of 8m.how fast is it going when it hits the ground? accleration due to gravity is g=9.8m/s
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Hai xe xuất phát cùng lúc tại hai vị trí A B cách nhau 20 km chuyển động từ A đến B với vận tốc lần...
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