How does resistance training prevent osteoporosis?
A visitor to the observation deck of a skyscraper manages to drop a penny over the edge. As the penny falls faster, the force due to air resistance increases. How does this affect the acceleration of the penny? a. The acceleration decreases b. The acceleration remains constant and not zero (my answer) c. The acceleration remains zero d. The acceleration increases.
Weight calculation: The weight by definition, is given by: W = m * g Where, m: mass of the book box g: acceleration of gravity Substituting values we have: W = 12 * 9.8 W = 117.6 N Calculation of normal force: For normal force, we make a free-body diagram in vertical direction, therefore, we