In outer space, where there is no gravity or air resistance, an astronaut pushes on two moon rocks, using 12N of force on each. One rock has a mass of 2 kg, the other has a mass of 4 kg. Which statements are true? (Mark all true statements)
A. Both rocks will push back at the astronaut with 12 N.
B. Since the astronaut is weightless, he cannot push on the rocks.
C. Since both rocks are weightless, they do not push back on the astronaut.
D. The 4 kg rock pushes back on the astronaut twice as hard as the 2 kg rock.
E. Since both rocks are weightless, they will have the same acceleration.
Answers: 1
Physics, 21.06.2019 22:00
•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?
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Physics, 21.06.2019 23:30
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Physics, 22.06.2019 11:00
What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?
Answers: 1
In outer space, where there is no gravity or air resistance, an astronaut pushes on two moon rocks,...
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