Author Question: A 320-g air track cart is traveling at 1.25 m/s and a 270-g cart traveling in the opposite direction ... (Read 68 times)

luvbio · **on:** Jul 29, 2018

A 320-g air track cart is traveling at 1.25 m/s and a 270-g cart traveling in the opposite direction at 1.33 m/s. What is the speed of the center of mass of the two carts?

A)

2.80 m/s

B)

0.0693 m/s

C)

0.131 m/s

D)

1.47 m/s

E)

1.29 m/s

Question 2

Electromagnetic waves are

A)

transverse.
B)

circular waves.
C)

alternating between longitudinal and transverse.
D)

surface waves.
E)

longitudinal.