Newton's Laws of Motion
8th grade
7910 times
Physics
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4 years ago
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20 QuestionsShow answers
  • Question 1
    30 seconds
    Q. An object at rest will _______ if no outside forces are applied.
    answer choices
    Stay at rest
    Increase Velocity
    Decrease Mass
  • Question 2
    30 seconds
    Q. Momentum is related to Newton's first law.
    answer choices
    True
    False
  • Question 3
    30 seconds
    Q. A greater applied force is required to move an object with a greater mass than one with a smaller mass.
    answer choices
    True
    False
  • Question 4
    30 seconds
    Q. The SI units for force are...
    answer choices
    Kilograms
    Newtons
    Meters per second
    Pounds
  • Question 5
    60 seconds
    Q. If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first?
    answer choices
    the cannonball
    the baseball
    The balls land at the same time.
    the ball with the larger volume
  • Question 6
    60 seconds
    Q. If an action force is a cue ball (white) hitting a billiard ball (various colors) when playing pool, then the reaction force is
    answer choices
    exerted on the table
    exerted on all the other billiard balls.
    not present
    exerted by the billiard ball on the cue ball.
  • Question 7
    60 seconds
    Q. A crumpled piece of paper hits the ground before a flat sheet of paper because
    answer choices
    the acceleration of gravity is greater on the  crumpled paper.
    there is more air resistance against the flat paper.
    the crumpled paper is more massive
    the crumpled paper is less massive.
  • Question 8
    60 seconds
    Q. According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
    answer choices
    remain in motion.
    eventually come to a stop.
    change its momentum.
    accelerate.
  • Question 9
    60 seconds
    Q. An ice skater at rest pushes against a sled at rest, causing both the skater and sled to move away from each other with different accelerations. This is an example best described by
    answer choices
    Newton’s first law of motion for objects at rest.
    Newton’s first law of motion for objects in motion.
    Newton’s second law of motion.
    Newton’s third law of motion.
  • Question 10
    60 seconds
    Q. A sled sliding on a flat, icy surface with a constant velocity is best described by
    answer choices
    Newton’s first law of motion for objects at rest.
    Newton’s first law of motion for objects in motion.
    Newton’s second law of motion.
    Newton’s third law of motion.
  • Question 11
    60 seconds
    Q. Which of the following explains the difference between speed and velocity?
    answer choices
    One has motion, and the other does not.
    One has direction, and the other does not.
    One involves time, and the other does not.
    One involves acceleration, and the other does not.
  • Question 12
    60 seconds
    Q. The gravitational pull is greater between two objects that
    answer choices
    have greater masses.
    have rougher surfaces.
    are farther apart.
    are moving at greater speed
  • Question 13
    30 seconds
    Q. Dividing the total distance traveled by the total time is how to calculate
    answer choices
    average speed.
    average velocity.
    average acceleration.
  • Question 14
    60 seconds
    Q. A hiker’s velocity begins at 1.8 m/s uphill and changes to 1.5 m/s uphill. How do you know that the hiker has a negative acceleration?
    answer choices
    His direction changed.
    His direction was unchanged.
    His speed increased.
    His speed decreased.
  • Question 15
    60 seconds
    Q. How does Newton’s third law explain how a rocket takes off?
    answer choices
    The rocket’s acceleration is positive, while the gasses acceleration is negative but the direction is the same. 
    The rocket is at rest until ignition.
    The hot gasses move in one direction, while the rocket moves in the opposite direction but with equal force.
  • Question 16
    30 seconds
    Q. Acceleration is caused by a force acting on a mass.
    answer choices
    Newton’s first law of motion
    Newton’s second law of motion
    Newton’s third law of motion
  • Question 17
    30 seconds
    Q. For a force on an object there is an equal and opposite force.
    answer choices
    Newton’s first law of motion
    Newton’s second law of motion
    Newton’s third law of motion
  • Question 18
    30 seconds
    Q. Without any force to change it, an object at rest stays at rest and an object in motion stays in motion
    answer choices
    Newton’s first law of motion
    Newton’s second law of motion
    Newton’s third law of motion
  • Question 19
    60 seconds
    Q. If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?  (F=ma)
    answer choices
    The one with a mass of .78 kg will have the greatest acceleration.
    The one with a mass of .52 kg will have the greatest acceleration.
    They will both accelerate at the same rate.
  • Question 20
    30 seconds
    Q. A greater applied force is required to move an object with a greater mass than one with a smaller mass.
    answer choices
    True
    False
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