Quick physics multiple choice question out

Isla’s change in velocity is 30 m/s, and hazel has the same change in velocity. which best explains why they would have different accelerations? isla had negative acceleration, and hazel had positive. isla had a different time than hazel. isla had positive acceleration, and hazel had negative. isla went a farther distance than hazel.

Which notation is used to represent an alpha particle? a. b. c. d.

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.