2. Astronauts in space (aboard the International Space Station, for instance) are effectively weightless. Suppose an astronaut gently throws a tool to a companion. What type of path (a circle, parabola, straight line, zigzag etc.) will the tool follow? Once let go, which of the three laws is the tool explicitly obeying?
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- 2. Find the free-fall acceleration on the surface of the Moon and on the surface of the Sun. 3. An alien scientist standing on the surface of a spherical planet (R = 8.60 x 107 m) drops a small ball from rest and observes that the ball takes 0.480 s to free-fall a distance of 1.90 m. Based on this observation, estimate the planet's mass.14. An object is swung around on a string in a vertical circle, while its speed is slowly increased. At some point, the string breaks. Where in the object's path would this most likely happen? Explain.10. Use the formulas a = v2/r and v = 2πr/T to derive the following formulas: (a) centripetal acceleration in terms of v and T (but not r). (b) centripetal acceleration in terms of r and T (but not v).
- Imagine a CD with an outer radius of 12 mm and an inner radius of 2 mm. A speck of dust on the outer edge completes a full revolution in 0.5 seconds. A speck of glitter on the inner edge completes a full revolution in 0.2 seconds. a) What is the centripetal acceleration of the dust in m/s2? b) What is the centripetal acceleration of the glitter in m/s2?The class I'm taking is physics for scientists and engineers! I am completely stuck. Need help. I have attached the problem. Please view attachment before answering. If you can please explain your answer so I can fully understand. Thank you!A 0.05 kg golf ball moves in a circle with a radius of 2.3 m at a constant speed of 4 m/s. The centripetal acceleration is m/s². 201²