Question

pregunta de opción múltiple
how do ramps work?
□ spread the work out over a longer distance to make it seem easier.
□ are not very long and more steep so that you can get to your destination faster.
volver a ver enviar

Explanation:

Ramps are simple machines (inclined planes). The physics of work ($W = Fd\cos\theta$) shows that for lifting an object to a height $h$, using a ramp (longer distance $d$) reduces the force $F$ needed (since $W = mgh$ is constant, longer $d$ means smaller $F$). The first option explains this: spreading work over a longer distance (ramp’s length) makes the force needed smaller, so the task seems easier. The second option is incorrect because ramps are long and less steep, not short and steep, and their purpose is to reduce force, not speed up travel.

Answer:

A. Spread the work out over a longer distance to make it seem easier.