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STRAIGHTERLINE PHYSICS EXAM 2 QUESTIONS
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STRAIGHTERLINE PHYSICS EXAM 2 QUESTIONS
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STRAIGHTERLINE PHYSICS EXAM 2 QUESTIONSThe amount of matter in an object is called its weight. T or F - Answers-False
The SI unit of force is called the kilogram. T or F - Answers-False
If a hockey puck slides on a perfectly frictionless surface, it will eventually slow down
because of its inertia. T or F - Answers-False
An object is at rest on the ground. A child is pushing on it with 15 N of force to the left.
What other force must be acting on the object? - Answers-Friction pushing it to the right
The combination of all the forces that act on an object is called the net force. FT -
Answers-True
A student throws a rock through a glass window causing the window to shatter. How
does the force of the rock on the window compare to the force of the window on the
rock? - Answers-The force of the rock on the window is equal to the force of the window
on the rock
A student drops a ball off the top of a tall building. The ball accelerates downward with
air resistance. Consider the ball some time before it has reached terminal velocity.
Which of the following is the reaction pair force (i.e., Newton's third law pair) to the force
of gravity on the ball? - Answers-The force of the ball pulling up on earth
Sphere A is initially at rest on the ground and is kicked so that it has an initial velocity of
vo at an angle of θ. Sphere B is also initially at rest on the ground and kicked so that it
has an initial velocity is 2vo at the same angle θ. Air resistance is negligible. The two
spheres are identical. Consider both spheres at the moment when they have reached
their respective maximum heights. Which of the following statements is accurate? -
Answers-The net force on sphere A is equal to the net force on sphere B
A student applies a steady 100 N force at an angle 45° below the horizontal to a 25 kg
box. The maximum static friction force on the box is 100 N. Which of the following is the
Newton's third law reaction pair force to the 100 N force applied by the student? -
Answers-the force of the box on the student
The coefficient of friction is commonly reported using which of the following units? -
Answers-nothing
A block slides down an inclined plane. The block experiences some amount of friction.
Which of the following changes would result in a decrease in friction? - Answers-an
increase the angle of the ramp
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