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.

your answer is c! hope this : )

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

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