You walk forward at 1.5 m/s for 8 s. your friend decides to walk faster and starts out at 2.0 m/s for the first 4 s. then she slows down and walks forward at 1.0 m/s for the next 4 s. make a distance-time graph of your motion and your friend's motion. who walked farther?

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s

The amount of work done is determined by 2 factors. describe an example of work (using the scientific definition) list the 2 factors that determine the amount of work done.