Idon’t know what to write haha

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

Use the drop-down menus to answer each question. which line represents the movement of a cart with a constant acceleration? a which line represents the movement of a cart with a constant velocity? c which lines represents a cart with no velocity or acceleration? b