A bowling ball of mass 4.0 kg, initially moving with a velocity of 2.0 m/s collides elastically with a steel ball of mass 6.0 kg. initially moving with a velocity of -4.0 m/s. What is the velocity of the bowling ball and steel ball after the collision?

You have been called to testify as an expert witness in a trial involving a head-on collision. car a weighs 1515 lb and was traveling eastward. car b weighs 1125 lb and was traveling westward at 44.0 mph. the cars locked bumpers and slid eastward with their wheels locked for 22.5 ft before stopping. you have measured the coefficient of kinetic friction between the tires and the pavement to be 0.750 . how fast (in miles per hour) was car a traveling just before the collision? (this problem uses english units because they would be used in a u.s. legal proceeding.)

If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .

What are the factors that affect the resistance of a wire?