Newton's Laws of Motion: Self-Test

Take this self-test to review important knowledge of Newton's Laws of Motion

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QUESTION OF
Views #: 543
Questions #: 11
Time: 10 minutes
Pass Score: 80.0%
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Newton's first law

1 pts

An object at rest tends to stay at (1) and an object in motion tends to stay in (2) in a (3) line at a constant (4)

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State Newton's second law in equation form

1 pts
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Is acceleration a scalar or a vector quantity?

1 pts
volume_mute
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What is the acceleration of the object?

1 pts

Three newtons are exerted northward on a 10-kg object while 4 newtons are exerted southward.  What is the acceleration of the object?

  1. Acceleration = (1) m/s2
  2. Direction = (2)
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What is the unit of force in the SI system?

1 pts
Missing
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How much does a 3-kg object weigh?

1 pts

weigh = (1) N

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Explain why a heavier object does not fall faster

1 pts
volume_mute

Explain why a heavier object does not fall faster when dropped since the accelerating force (its weight) is greater.

Explanation:

its mass is greater by just the _______ as its weight.  Thus, an application of Newton's second law (F = ma) results in the same acceleration

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Does an object continue to accelerate if dropped from a tall building?

1 pts
volume_mute

The acceleration of gravity is 9.8 m/s2 downward.  In actual practice, does an object continue to accelerate if dropped from a tall building?

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Whirling a shoe tied to a rope above your head

1 pts

You have tied a shoe to a rope and are whirling it above your head. The following are the forces on the shoe.  State the direction of each force

  1. Gravity (1)
  2. String (2)
  3. Air friction (3)
Please drag and drop the selected option in the right place or type it instead
pulls inward toward the center
pulls downward on the shoe
acts in the direction opposite to the motion of the shoe
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State Newton's third law

1 pts

For every force object X exerts on Y, Y exerts an equal and (1) force on (2)

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Corresponding reaction force

1 pts
volume_mute

My weight is the result of the earth's gravitational force on my body.  The corresponding reaction force is my body's gravitational force on the earth.

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Explanation

✕
0
sin cos tan
sin-1 cos-1 tan-1 π e
xy x3 x2 ex 10x
y√x 3√x √x ln log
( ) 1/x % n!
7 8 9 + MS
4 5 6 – M+
1 2 3 × M-
0 . EXP ÷ MR
± RND C = MC
Keywords
Year 10