Physics Question Preview (ID: 37507)


Reviews Terms Related To The Topics Of Motion, Forces, Energy, And Simple Machines. TEACHERS: click here for quick copy question ID numbers.

A worker needs to load a heavy box onto a truck. The worker uses a ramp to move the box because the ramp
a) increases the weight of the box
b) reduces the gravitational force on the box
c) increases the amount of friction on the box
d) reduces the amount of force applied to the box

Which statement best explains how the pulley system in a crane makes work easier?
a) The pulley system reduces the mass of the object being lifted
b) The pulley system reduces the volume of the object being lifted
c) The pulley system reduces the amount of force needed to lift an object
d) The pulley system reduces the distance the object being lifted needs to move

Which simple machine uses a fulcrum to redirect a force?
a) inclined plane
b) lever
c) pulley
d) wedge

Which simple machine increases the distance over which a load travels and reduces the needed force?
a) wheel and axle
b) wedge
c) pulley
d) inclined plane

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?
a) friction increase mechanical advantage
b) friction opposes the direction of movement
c) friction makes movement of an object easier
d) friction reduces the amount of work used to move an object

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?
a) gravity
b) weight
c) friction
d) acceleration

What is the amount of force required to accelerate a 20 kg object to 5 meters per second squared?
a) 0.25 N
b) 4 N
c) 15 N
d) 100 N

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?
a) 200 N to the left
b) 400 N to the left
c) 600 N to the left
d) 1000 N to the left

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) 0.75 mph
b) 20 m/s
c) 80 mph
d) 1, 200 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
a) inertia of the orange
b) centripetal force of the orange
c) the friction acting on the orange
d) the balanced forces acting on the orange

An airplane is flying with a net force of zero. This means the airplane is
a) slowing down and losing altitude
b) moving at a constant speed and losing altitude
c) slowing down and traveling along a straight line
d) moving at a constant speed and traveling along a straight line

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) one girl will pull the other toward her
b) both girls will stay in the same place
c) gravity will cause the rope to snap
d) the rope will break

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?
a) area
b) mass
c) weight
d) volume

What do machines do?
a) change the amount of force you exert of the distance over which you exert the force
b) increase the amount of work that is done
c) decrease the amount of work that is done
d) eliminate friction

The mechanical advantage of a machine is the number of times a machine increases
a) the distance an object is moved
b) the amount of friction
c) the change in direction
d) the force exerted on the machine

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