Which wheel and axle would allow a load of rocks to be dragged with less force?

Two wheel and axles

A. Wheel and axle A.

B. Wheel and axle B.

C. Both devices would require the same amount of force.

D. Not enough information

When someone slams her books on a table the kinect energy is transferred into vibrations that travel to your ears as sound waves which statement describes the movement of those waves

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.

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader