Acyclist has a momentum of 771.9 kg m/s. if her mass is 93 kg what is the speed of the cyclist?
a. 8.3 m/s
b. 12.1 m/s
c. 13.2 m/s
d. 4.4 m/s

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.

Which of these statements best explains how the hydrosphere interacts with the atmosphere to affect global climate? mountains block rain clouds and cause changes in global rainfall and evaporation. humans burn fossil fuels to produce greenhouse gases which cause global warming. humans cut down trees which affects the amount of oxygen in different parts of the globe. greenhouse gases, like carbon dioxide, dissolve in oceans and prevent global warming.