Physics, 30.06.2019 03:30 brittneyzenger001
Nora tied a string around a tennis ball, and then she swung it in a circle in front of her to demonstrate a planet orbiting the sun. she explained that her hand represented the sun, the ball represented a planet, and the string kept the ball from leaving the "orbit" around her hand. why doesn't the string work in the same way as gravity? a. the string holding the ball in orbit is a contact force; gravity is a noncontact force. b. the string only pulls one way; gravity pulls both ways. c. the string keeps the distance between the bodies the same; gravity makes the distance vary. d. there is no difference between the two systems.
Answers: 2
Physics, 21.06.2019 16:50
12 drag each label to the correct category. decide whether each statement describes mass or weight. measured in newtons measured in kilograms does not change when gravity changes === a gravitational force changes when gravity changes the amount of matter in something mass weight
Answers: 1
Physics, 22.06.2019 01:10
If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .
Answers: 2
Physics, 22.06.2019 06:30
=force × distance a. work b. velocity c. pressure d. momentum
Answers: 1
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