How would the kinetic energy of a 12,000 kg train compare with the kinetic energy of a 900 kg compact car if both were traveling at the same speed?
a. the trains kinetic energy would be equal to the cars kinetic energy.
b. the trains kinetic energy would be greater than the cards kinetic energy.
c. the trains kinetic energy would be less than the cars kinetic energy.

What is the chemical formula of the following compound

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

__can be defined as which velocity changes