A 4.29 kg ball is dropped from the roof of a building 151.1 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 14.0 N on the ball.
How long does it take to hit the ground? The acceleration of gravity is 9.81 m/s2 .
Answer in units of s
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 00:00
True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.
Answers: 1
Physics, 22.06.2019 11:00
A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?
Answers: 3
Physics, 23.06.2019 02:30
Aproton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?
Answers: 2
A 4.29 kg ball is dropped from the roof of a building 151.1 m high. While the ball is falling to Ear...
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