Question

An object of mass 6.00 kg falls with an aceleration of 8.00 m/s2. The magnitude of air resitance must be ____ N

Answer 1

Using Newton's Second Law, we can find the air resistance. We know the net force is equal to mass times acceleration.$F_{net} = m*a = (6.00kg)(8.00 \frac{m}{s^2}) = 48N F_{g} - F_{d} = 48N 48N = (6.00kg)(9.81m/s^2) - F_{d} F_{d} = 10.86N$