Which best describes two counteracting forces on an object

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

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader