Question 1

According to Newton's third law, what happens when Joanne throws a basketball to the east?

Accepted Answer

The basketball exerts an equal and opposite force on Joanne, pushing her to the west.

Question 2

What is the magnitude of the applied force F required to make the normal force on a box equal to its weight on an incline?

Accepted Answer

The magnitude of F must be mg(1-cosθ) to counteract the normal component of gravity and the weight contribution, effectively balancing the normal force to equal the object's total weight.

Question 3

In the pulley system described, how far does each mass move in one second?

Accepted Answer

The masses move at a constant velocity determined by the net force acting on the system; given that the initial total mass is the same, the displacement is calculated based on the acceleration resulting from the net force imbalance after the shift.