Mary is driving a car of mass 900 kilograms toward the north with a velocity of 22 meters/second. Danny is driving his 900-kilogram car with a velocity of 15 meters/second toward the east. They collide and both cars move together afterwards. What is the magnitude of the resultant momentum of the cars after the collision?

1 answer

They are at 90 degrees to each other.

momentum mary=900*22^2
momentum Danny=900*15^2

resulatant=sqrt(danny^2 + mary^2)
= 900(sqrt(15^2+22^2)