Laws of Motion Practice Quiz #2

If an object with a mass of 10 kg accelerates at the rate of 5 m/s². Calculate the force required to produce this acceleration.

• 50 N

• .50 N

• 5 N

• 500 N

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NGSS.MS-PS2-2

A rocket pushes exhaust 10,000 N. Without any other forces acting on the rocket, how much force does the rocket go forward?

• 100 N

• 1,000 N

• 10,000 N

• 100,000 N

Answer explanation

Forces are equal and opposite

(Newton's 3rd Law)

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Which force produces a change in motion?

• Acceleration

• Unbalanced

• Balanced

• Velocity

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NGSS.MS-PS2-2

The force that slows down a ball rolling down a hill is called ___.

• Gravity

• Momentum

• Friction

• Acceleration

If the mass of an object is 30 kg, what is the weight?

• 10 N

• 30 N

• 300 N

• 1000 N

Answer explanation

When going from mass to weight multiply by 10.

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If the weight of an object is 23 kg, what is the mass?

• 2.3 kg

• 0.23 kg

• 230 kg

• 2300 kg

Answer explanation

When going from weight to mass divide by 10

Which law of motion states that the greater the mass of an object, the more force it will take to accelerate the object.

• 1st Law of Motion

• 2nd Law of Motion

• 3rd Law of Motion

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NGSS.MS-PS2-2

How much force is acting on 2 kg object that's accelerating at 5 m/s²?

• 100 N

• 250 N

• 2.5 M

• 10 N

Answer explanation

F= ma

Multiply the mass (2 kg) by acceleration (5 m/s²)

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NGSS.MS-PS2-2

You pull a wagon with a force of 20 N. The wagon has a mass of 10 kg. What is the wagon's acceleration?

• 2 m/s²

• 10 m/s2

• 0.2 m/s2

• 20 m/s2

Answer explanation

F= ma

To solve for acceleration:

a = F/m

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NGSS.MS-PS2-2

What is the net force on the block?

• 30 N to the right

• 10 N to the right

• 10 N to the left

• 30 N to the left

Answer explanation

Forces going in opposite direction are substrate:

20 - 10= 10 N

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NGSS.MS-PS2-2