# science

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**please help(:**
.

How would i set these up? like what is the equations?

# 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?