direction ................................................................
The speed at the sound barrier is 343 m/s
Factor out 8 and then facotr and u get
8/9(9x+1)(9x-1
KE= 1/2 mv^2
Kinetic Energy is equal to 1/2 x mass x velocity squared
The mass of the larger ball has TWICE
the kinetic energy. KE is directly proportional to the mass.
