Two ice skaters are at rest, Abby and Ben. Abby has a mass of
52.5 kg. They push off each other.
After, Abby moves 1.59 m/s east,
while Ben moves 1.22 m/s west.
What is Ben's mass?
(Unit = kg)
Remember: right is +, left is -

Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells? burning fossil fuels contributes to climate change. burning fossil fuels takes place inside expensive fuel cells. fossil fuels aren't widely available, but pure hydrogen is. fossil fuels are nonrenewable.

Need only answer if you think you know it

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o