Physics, 19.09.2019 00:00 smarty5187
Earth-orbiting astronauts feel weightless in space because choose all that apply. 1 point they are in free-fall motion. there is an absence of contact forces acting upon their bodies. gravity is the only force acting upon their bodies. they are not experiencing any support forces. their surroundings are accelerating to the earth at the same rate they are.
Answers: 3
Physics, 21.06.2019 22:20
1400 kg car has a speed of 27 m/s. if it takes 7 s to stop the car, what is the impulse and the average force acting on the car?
Answers: 1
Physics, 22.06.2019 06:00
Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?
Answers: 1
Physics, 22.06.2019 17:40
Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.
Answers: 1
Earth-orbiting astronauts feel weightless in space because choose all that apply. 1 point they are...
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