Agirl, moving at 8.8 m/s on in-line skates, is overtaking a boy moving at 4.3 m/s as they both skate on a straight path. the boy tosses a ball backward toward the girl, giving it speed 11.4 m/s relative to him. what is the speed of the ball relative to the girl, who catches it?

What are atoms of the same element with varying number of neutrons

Which lists the fundamental forces in order, from strongest to weakest? strong nuclear, weak nuclear, electromagnetic, gravitational strong nuclear, electromagnetic, weak nuclear, gravitational gravitational, weak nuclear, electromagnetic, strong nuclear electromagnetic, gravitational, strong nuclear, weak nuclear

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above