A train car of mass 16,500 kg moves along the railroad track with a constant speed of 14 m/s. What is the momentum of the car?

231000kgm/s

Explanation:

Given parameters:

Mass of train car = 16500kg

Constant speed  = 14m/s

Unknown:

Momentum of the car  = ?

Solution:

To solve this problem, we must understand that the momentum of a body is the quantity of motion a body possess.

So;

 Momentum   =  mass x velocity

 Momentum  = 16500 x 14  = 231000kgm/s

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form