On a planet far, far away, an astronaut picks up a rock. The rock has a mass of 5.00 kg, and on this particular planet its weight is 40.0 N. Tf the astronaut exerts an upward force of 46.2 N on the rock, what is its acceleration?
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The mass of the rock is: .
The weight is: .
So, the acceleration due to gravity is: .
The astronaut exerts an upward force of : .
At the same time the gravitational force is also acting on it, which is it’s weight.