The velocity of an object increases from –10 m/s to –15 m/s in 2.0 s. what is the average acceleration of the object? +2.5 m/s2 –12.5 m/s2 –2.5 m/s2 +12.5 m/s2

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

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?