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1 Cooper_Kaleb PS > Force Test > Flashcards

Force Test Flashcards

1
Q
  1. A firefighter feels the hose pushing backwards onto him as he uses it to put out a fire. What is the most likely cause of this?
A
  1. The escaping water exerts an equal and opposite force on the hose.

Newton’s 3rd law

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2
Q
  1. The upward force on an object falling through the air is?
A
  1. Air resistance

Force notes

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3
Q
  1. The relationship among mass, force, and acceleration is explained by.
A
  1. Newton’s 2nd Law of Motion

Force notes

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4
Q
  1. For any object, the greater the force that’s applied to it , the greater it’s will be
A
  1. Acceleration

Force notes

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5
Q
  1. Which statement is false?
A
  1. Weight is a constant no matter where you are located.

Force notes

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6
Q
  1. When two forces on the same object are equal, and opposite these forces are called forces?
A
  1. Balanced

Force notes

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7
Q
  1. Consider a watermelon that starts from rest and is dropped straight down from a tall building. Air resistance can be ignored. Which statement about the watermelons motion is false?
A
  1. The watermelon falls with a constant velocity.

Force notes

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8
Q
  1. A man weighing 800 N is standing on a chair. In order to support the man , what force is the chair exerting?
A
  1. 800 N up

Force notes

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9
Q
  1. What is the net force on the block to the right?
A
  1. 2 N right

Force notes

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10
Q

In the picture to the right, if the card were quickly pulled off the cup like the arrow suggests, which property would explain why the coin falls into the cup rather than moving with the card.

A
  1. Inertia

Force notes

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11
Q
  1. An object will move at a constant velocity unless an unbalanced force acts upon it.
A
  1. Newton’s 1st Law
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12
Q
  1. Push or pull one body exerts on another.
A
  1. Force
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13
Q
  1. The highest velocity a falling object will reach.
A
  1. Terminal velocity
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14
Q
  1. Tendency of an object to resist changes in motion.
A
  1. Inertia
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15
Q
  1. The attraction any two objects have on one another.
A
  1. Gravity
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16
Q
  1. A net force acting on an object causes the object to accelerate in the direction
    of the net force.
A
  1. Newton’s 2nd law
17
Q
  1. Related to the amount of force needed to change an object’s motion.
A
  1. Momentum
18
Q
  1. Why does someone not wearing a seatbelt in a car fly forward when the car stops suddenly? Make sure to include which law explains this..
A
  1. Because objects in motion resist a change in motion due to inertia
    1st law
19
Q
  1. What speed will skydiver eventually reach? What is this speed called
A
  1. 55m/s

Terminal velocity

1 Cooper_Kaleb PS (6 decks)

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