Physics, 17.07.2019 01:10 alexander1093
All objects moving in a circle experience a centripetal force. the form of centripetal force depends on the object in circular motion and the force causing the circular movement. which of the following describes the correct centripetal force acting on an object moving in a circle?
the force of air resistance as a car drives around a corner.
the force of gravity as a satellite orbits a planet.
the force of air resistance as a ball on a string is spun in a circle.
the force of inertia as a person spins on a ride at an amusement park.
what is the maximum speed at which a car can safely travel around a circular track of radius 55.0 m if the coefficient of friction between the tire and road is 0.350?
2.60 m/s
4.39 m/s
13.7 m/s
43.0 m/s
ciara is swinging a 0.015 kg ball tied to a string around her head in a flat, horizontal circle. the radius of the circle is 0.70 m. it takes the ball 0.60 seconds to complete one full circle. calculate the tension in the string and its direction that provides the centripetal force acting on the ball to keep it in the circular path.
0.0077 n, toward the center of the circle
1.2 n, toward the center of the circle
0.0077 n, along the line tangent to the circle
1.2 n, along the line tangent to the circle
Answers: 1
Physics, 21.06.2019 21:40
Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?
Answers: 3
Physics, 22.06.2019 12:10
Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f
Answers: 2
Physics, 22.06.2019 17:10
As the distance from a magnet increases, what happens to the magnet force?
Answers: 1
Physics, 22.06.2019 22:00
Which statement best explains why the overall charge on an atom is zero?
Answers: 1
All objects moving in a circle experience a centripetal force. the form of centripetal force depends...
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