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Masses of force? |
With what force is a player hitting a 0.4 kg baseball, if it accelerates at a rate of 80 m/s2? A tennis player hits a tennis ball with a force of 330 N, and it accelerates at the rate of 5,500 m/s2. What is the mass of the tennis ball? Li is pedaling his bike with a force of 220 N. The combined mass of Reese and her bike is 55 kg. What is the acceleration of his bike? Fnet = Net Force, a = acceleration, m = mass Fnet = a * m 1) Force = 80m/s2 * 0.4kg = 32N m = Fnet/a 2) m = 330N/5500m/s2 = 0.06Kg a = Fnet/m 3) a = 220N/55Kg = 4m/s2 F = m * a = .4(80) = 32N do the rest!! f=m*a 0.4* 80 =32N f=ma 330=5500m m=330/5500 m=0.06kg f=ma 220=55a a=220/55 a=4m/s2 |
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