2) two vehicles approach a right angle intersection and then collide. after the collision, they become entangled. if their mass ratios were 1: 4 and their respective speeds as they approached were both 13 m/s, find the magnitude and direction of the final velocity of the wreck.

Explanation:

Given

Given two vehicles approach a right angle

Suppose one is traveling with towards north and other towards east

Ratio of their masses is

Both have a common velocity(u) of 13 m/s and v be the final velocity at an angle of w.r.t to east  after collision

after collision they both entangled thus

conserving Momentum in east i.e horizontal direction

---1

conserving momentum in North direction i.e. in vertical direction

---2

Divide 1 &2  we get

w.r.t east

Thus v is given by

the focus of lesson 1 is newton's first law of motion - sometimes referred to as the law of inertia. newton's first law of motion is often stated as. an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

explanation: