Which of these IS an example of balanced forces?

A. a book on a shelf
B. air rushing out of a balloon
C. rolling over and falling off the bed
D. a car speeding up at a constant rate

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)

Can you receive a shock severe enough to prevent you from releasing the wire from an ordinary outlet with dry hands? a. no b. yes explain