Question

a 75 kg thief is running at a velocity of 15 m/s up the street (positive). miles, who weighs 84 kg, collides head on with him in the opposite direction at 17 m/s to attempt to save the old lady's purse, what is the final velocity of their collision?

Answer 1

When a vehicle changes direction, its velocity also changes since velocity comprises both speed and direction.

How do you calculate final velocity?

V f is equal to V i plus At. The final velocity of an item can be calculated for a given beginning velocity by multiplying the acceleration brought on by a force by the time the force is applied and then adding the result to the initial velocity.

What is the collision formula?

An elastic collision is one in which the momentum, p, and the kinetic energy, KE, are both conserved. In other words, po = pf and KE0 = KEf are the results. We will write 1/2 m1 when we remember that KE = 1/2 mv2 (v1i) 2 + 1/2 m2(vi) (vi) 2 is equal to half of m(v1f) and m(v2f).

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