Test 02 Review

In the equation F = ma, the variable "F" refers to the

• normal force

• gravity force

• friction force

• net force

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NGSS.HS-PS2-1

A 2 kg block is in free fall. The force of gravity acting on it is

• 0 N

• 2 N

• 9.81 N

• 19.6 N

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A coefficient of friction is (typically) a value between

• -1 and 1

• 0 and 1

• -1 and 0

• -10 and 10

The mass of this box is

• 300 kg

• 9.81 kg

• 30.6 kg

• 10.2 kg

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NGSS.HS-PS2-1

The weight of this box is

• 300 N

• 9.81 N

• 30.6 N

• 10.2 N

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The magnitude of the net force on this box is

• 30.6 N

• 9.81 N

• 900 N

• 300 N

• 100 N

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NGSS.HS-PS2-1

The magnitude of this box's acceleration is

• 30.6 m/s^2

• 9.81 m/s^2

• 3.3 m/s^2

• 29.4 m/s^2

• 100 m/s^2

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NGSS.HS-PS2-1

If this box had an initial velocity of 12.0 m/s to the right, its velocity after 1.4 seconds would be

• 7.4 m/s

• 10.6 m/s

• 12.0 m/s

• 16.6 m/s

• 100 m/s

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NGSS.HS-PS2-1

An object's net force has an x-component of 3 N and a y-component of -4 N. The magnitude of the net force is

• 1 N

• -1 N

• 5 N

• -5 N

• 7 N

An object is subjected to a net force of <3.00, 4.00> Newtons. The angle of the net force above the horizontal at this moment is

• 36.9°

• 41.4°

• 48.6°

• 53.1°

• stupid