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What do machines do?
the force exerted on the machine
inertia of the orange
reduces the amount of force applied to the box
The pulley system reduces the amount of force needed to lift an object
friction opposes the direction of movement
100 N
change the amount of force you exert of the distance over which you exert the force
80 mph
Which statement best explains how the pulley system in a crane makes work easier?
the force exerted on the machine
inertia of the orange
reduces the amount of force applied to the box
The pulley system reduces the amount of force needed to lift an object
friction opposes the direction of movement
100 N
change the amount of force you exert of the distance over which you exert the force
80 mph
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?
the force exerted on the machine
inertia of the orange
reduces the amount of force applied to the box
The pulley system reduces the amount of force needed to lift an object
friction opposes the direction of movement
100 N
change the amount of force you exert of the distance over which you exert the force
80 mph
What is the amount of force required to accelerate a 20 kg object to 5 meters per second squared?
the force exerted on the machine
inertia of the orange
reduces the amount of force applied to the box
The pulley system reduces the amount of force needed to lift an object
friction opposes the direction of movement
100 N
change the amount of force you exert of the distance over which you exert the force
80 mph
The mechanical advantage of a machine is the number of times a machine increases
the force exerted on the machine
inertia of the orange
reduces the amount of force applied to the box
The pulley system reduces the amount of force needed to lift an object
friction opposes the direction of movement
100 N
change the amount of force you exert of the distance over which you exert the force
80 mph
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
the force exerted on the machine
inertia of the orange
reduces the amount of force applied to the box
The pulley system reduces the amount of force needed to lift an object
friction opposes the direction of movement
100 N
change the amount of force you exert of the distance over which you exert the force
80 mph
A worker needs to load a heavy box onto a truck. The worker uses a ramp to move the box because the ramp
the force exerted on the machine
inertia of the orange
reduces the amount of force applied to the box
The pulley system reduces the amount of force needed to lift an object
friction opposes the direction of movement
100 N
change the amount of force you exert of the distance over which you exert the force
80 mph
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?
the force exerted on the machine
inertia of the orange
reduces the amount of force applied to the box
The pulley system reduces the amount of force needed to lift an object
friction opposes the direction of movement
100 N
change the amount of force you exert of the distance over which you exert the force
80 mph
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