a. Two objects travel towards each other from rest. One object accelerates at 2

Question

a. Two objects travel towards each other from rest. One object accelerates at 2 m/s² (object A) and the other accelerates at 1.75 m/s² (object B). If the two objects are initially 150 m away from each other, how far does object A travel before the two objects collide?

ANSWER: ?x = 80 m

b. What is the resultant velocity of the collision from part (a.) if object A has a mass of 100 kg and object B has a mass of 95 kg? Include speed and direction.

ANSWER: v = 1.548 m/s

c. A constant force of 500 N pushes object A away from object B for 3 seconds at the moment of the collision. What is object A's new velocity?

ANSWER: v = -13.45 m/s (neglecting air resistance)

d. After the constant force in part (c.) has stopped, how far would object A skid on the ground before halting to a stop if the coefficient of friction between the ground and object A is 0.50?

ANSWER: ?x = 18.46 m

e. What amount of force would it take for object A to come to a stop in 5 meters after the constant force in part (c.) has stopped?

ANSWER: F = 1,320.0 N

The answers given are according to my physics professor. I am requesting for confirmation that these values are correct, and for an explanation of the procedure of formulas used in order to derive these answers.

Explanation / Answer

t is constant s1 +s2 =150 0.5*2*tt+0.5*1.75*tt=150 solve for t u get it

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