A person slaps her leg with her hand, bringing her hand to rest in 0.003seconds from an initial speed of 4.00 m/s. What is the average force exerted on the leg, taking the effective mass of the hand and forearm to be 1.50 kg?

Let v1, v2, w be three linearly independent vectors in r 3 . that is, they do not all lie on the same plane. for each of the following (infinite) set of vectors, carefully sketch it in r 3 , and determine whether or not it is a vector space (i.e., a subspace of r 3 ). explain your reasoning

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat