A 1000-Kg Automobile Moving with a Speed of 24 M/s

question 21

Multiple Choice

A 1000-kg automobile moving with a speed of 24 m/s relative to the road collides with a 500-kg automobile initially at rest. If the two stick together, what is the velocity in m/s of the two cars after the collision according to an observer in a truck moving 10 m/s in the same direction as the moving cars?

• A) 6
• B) 11
• C) 24
• D) 26
• E) 31

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Definitions:

Estradiol

is a form of estrogen, a female sex hormone involved in the regulation of the reproductive and menstrual cycle.

Progesterone

A hormone produced in the ovaries, placenta (during pregnancy), and adrenal glands, important for regulating the menstrual cycle and maintaining the early stages of pregnancy.

Estrone

A weak estrogen hormone produced by the ovaries and important for female reproductive health.

Adrenaline

A hormone also known as epinephrine that increases heart rate, muscle strength, blood pressure, and sugar metabolism, released in response to stress.