An airplane starts from rest and reaches a takeoff velocity of 60.0m/s due north in 4.0 s. how far has it traveled before takeoff?

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.

What is the speed of an object at a given moment?

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?