Physics, 28.01.2020 23:41 Envious1552
One type of slingshot can be made from a length of rope and a leather pocket for holding the stone. the stone can be thrown by whirling it rapidly in a horizontal circle and releasing it at the right moment. such a slingshot is used to throw a stone from the edge of a cliff, the point of release being 18.0 m above the base of the cliff. the stone lands on the ground below the cliff at a point x. the horizontal distance of point x from the base of the cliff (directly beneath the point of release) is thirty times the radius of the circle on which the stone is whirled. determine the angular speed of the stone at the moment of release.
Answers: 3
Physics, 21.06.2019 20:20
Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2
Answers: 2
Physics, 22.06.2019 05:00
Aperson walking 1 mile everyday for exercise, leaving her front porch at 9: 00 am and returning to her front porch at 9: 25 am. what is the total displacement of her daily walk? a) 1 mileb) 0c) 25 minutes d) none of the above
Answers: 1
Physics, 22.06.2019 05:20
Given the position vector of the particle r(t)=(t+1)i+(t^2β1)j+2t k, find the particle's velocity and acceleration vectors at t=1
Answers: 1
One type of slingshot can be made from a length of rope and a leather pocket for holding the stone....
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