A worker needs to load a heavy box onto a truck. The worker uses a ramp to move the box because the ramp

Which statement best explains how the pulley system in a crane makes work easier?

Which simple machine uses a fulcrum to redirect a force?

Which simple machine increases the distance over which a load travels and reduces the needed force?

A student reads his paper on friction to the class. Which statement should he include in his paper if he wants to present accurate information?

When the roller coaster rolls onto a flat section of the track, what force would ultimately bring it to a stop if no other forces are added?

What is the amount of force required to accelerate a 20 kg object to 5 meters per second squared?

One person pulls on a rope with a force of 400 N to the right. Another person pulls on the opposite end with a force of 600 N to the left. What is the unbalanced net force?

Students observed a turtle in the schoolyard. They measured the distance that the turtle traveled in 30 minutes. If the turtle walked 40 meters in that time, what was its average speed?

A student walking quickly while carrying an orange on his lunch tray stops suddenly. The orange will most likely roll off the tray due to

An airplane is flying with a net force of zero. This means the airplane is

Two girls are pulling on opposite ends of a thick rope. Both girls pull on the rope with the same force but in opposite directions. If both girls continue to pull with the same force, what will most likely happen?

A teacher was discussing with the class that a bowling ball has more inertia that a basketball. Which physical property is most likely being compared?

What do machines do?

The mechanical advantage of a machine is the number of times a machine increases

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