Congress decreases personal income taxes. Which determinant of aggregate demand causes the change? Price
Consumer spending
Investment spending
Government spending
Net exports
Productivity
O Resource cost
O Government intervention (taxes, subsidies, or regulations)
None of the above

consumer spending

Explanation:

I would say consumer spending because depending on the time period you are looking at (assuming its 1950s america) income taxes would most likely be cut because bulk shopping, consumer intrest, and american culture were turning towards mass shopping and less self dependence. Thats my best go, im an AP human geo student right now so thats the best i have.

ek = (m·v2) / 2

v - velocity of system after the collision

m = m1 + m2

ek = (m1 + m2) ·v2/2

ek = (200 + 250) ·2,32/2 = 450·5,29/2 = 1190,25 j