Posted by Vladimyr on .
Two cars are moving. The first car has twice the mass of the second car, but only half as much kinetic energy. Then, both cars increase their speed by 8.00 m/s. They then have the same kinetic energy. The original speeds of the two cars are, respectively,
Physics - Elena, Wednesday, May 30, 2012 at 7:36am
m1•v1²/2 =m2•v2²/2 = m1•v2²/4.
m1• (v1+8)²/2 = m2• (v2+8)²/2 =
v1 =sqrt(32)= 5.66 m/s.
v2 =11.3 m/s
Physics - Breyonna Fawling, Friday, December 5, 2014 at 2:10pm
What if the instead of 8.00m/s it was 6.52m/s?