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Two Cars of Equal Mass, One Travelling North and the Other

Question 3

Multiple Choice

Two cars of equal mass, one travelling north and the other east, collide at the same speed at right angles to each other. Assuming the collision is inelastic, what is the velocity following the collision?

A) Two cars of equal mass, one travelling north and the other east, collide at the same speed at right angles to each other. Assuming the collision is inelastic, what is the velocity following the collision? A) times initial speed, at 45° east of north B) times initial speed, at 45° east of south C) the initial speed, at 45° east of north D) twice the initial speed, at 45° east of south times initial speed, at 45° east of north
B) Two cars of equal mass, one travelling north and the other east, collide at the same speed at right angles to each other. Assuming the collision is inelastic, what is the velocity following the collision? A) times initial speed, at 45° east of north B) times initial speed, at 45° east of south C) the initial speed, at 45° east of north D) twice the initial speed, at 45° east of south times initial speed, at 45° east of south
C) the initial speed, at 45° east of north
D) twice the initial speed, at 45° east of south