How much force will a tennis racket need to exert on a tennis ball with a mass of 0.67 kg. what is the acceleration at a rate of 5,600 m/s2

Do the following statements describe actin, myosin, both of the proteins or neither of the proteins? (a) contains a binding site for calcium (b) found in the i band (c) exists in a globular (g) form and a filamentous (f) form (d) contains a binding site for atp (e) is a component of the thin filament (f) is a component of the thick filament