A car of mass 1200kg moving at 50m/s slams into a cement wall and comes to a halt in 5 seconds. a. What is it’s impulse?
b. What is the force of impact on the truck?

Show the work and equations.

Ann walks 80 meters on a straight line 33 ∘ north of east starting at point 1. draw ann's path. represent ann's walk with a vector of length 80 meters. draw the vector starting at point 1. the length given in the display is in meters.

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)