A 60 kg woman ascends in an elevator that briefly accelerates at 2.0 m/s? upward. She stands on a scale that reads in kg. а) Draw the free-body diagram. b) Calculate the gravitational force and normal force. c) What is the normal force now when the elevator descends at 2.0 m/s² downward?

Q: 7. Ahmed has a mass of 45 kg and stands motionless on a on a horizontal floor. a) What upward force…

A: Given: mass of Ahmed, m = 45 kg

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A: mass= m = 4.25kg upward acceleration = a = g Normal force = ?

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Q: question 39 please

A: Given:

Q: 7. Ahmed has a mass of 45 kg and stands motionless on a on a horizontal floor. a. What upward force…

A:

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!