You are runing towards your friend at 5.0 m/s. he is running directly away from you, in a straight line, at 2.0 m/s. what is your velocity relative to him? a. -7.0 m/s b. +7.0 m/s c. -3.0 m/s d. +3.0 m/s

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?