The force on an object is given by the equation f = ma. in this equation, f is the force, m is the mass, and a is the acceleration. what is the force on an object that has a mass of 10 kg and an acceleration of 2.5 m/s2? a. 12.5 n b. 25 n c. 0.25 n d. 4 n

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A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work