A hollow plastic ball is projected into the air. There is significant air resistance opposing the ball's motion, so the magnitude of the ball's acceleration is not equal to g. At time t, the ball is moving up and to the right at an angle of 45ᄚ to the horizontal, as shown in the figure. Which of the following best shows the magnitude a and the direction of the ball's acceleration at time t?

This question cannot be answered without the accompanying figure. The direction and magnitude of the ball's acceleration depend on the forces acting on it, including air resistance and gravity. The figure would provide crucial information about the ball's trajectory and the relative strengths of these forces.

Air Resistance and Acceleration of a Plastic Ball

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