Author Question: A 2.3-kg object traveling at 6.1 m/s collides head-on with a 3.5-kg object traveling in the opposite ... (Read 129 times)

biggirl4568 · **on:** Jul 29, 2018

A 2.3-kg object traveling at 6.1 m/s collides head-on with a 3.5-kg object traveling in the opposite direction at 4.8 m/s. If the collision is perfectly elastic, what is the final speed of the 2.3-kg object?

A)

0.48 m/s

B)

7.1 m/s

C)

3.8 m/s

D)

4.3 m/s

E)

6.6 m/s

Question 2

A myopic (nearsighted) dancer wears eyeglasses that allow him to have clear distant vision. The power of the lenses of his eyeglasses is -3.00 diopters. Without eyeglasses, what is the far point of the dancer?

A) 0.50 m B) 0.17 m C) 0.42 m D) 0.33 m E) 0.25 m