Solve using vectors and the scale 1 cm = 10,000 kg x m/s. Both cars weigh 1,000 kg. Assume the collision to be elastic and sticking. Resolve the resultant into its component vectors.
1. Two cars collide at an intersection. They travel at a 45° angle. From your calculations
you find their combined momentum after the collision to be 40,000 kg x m/s. Find the
momentum of each car before the collision, and the velocity of each car before the
collision.

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

(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.)

Why do atoms emit energy of only specific wavelengths