Unit 1: Forces and Motion - Lesson 3 - Part 2

According to Newton’s second law of motion, if force remains the same but mass increases, then acceleration will

• increase

• decreases

• remain constant

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NGSS.MS-PS2-2

An object is propelled along a straight-line path by a force. If the net force were doubled, its acceleration would

• Halve

• Double

• Remain constant

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NGSS.MS-PS2-2

The force of friction on a sliding object is 10 newtons. The applied force needed to maintain a constant velocity is

• Less than 10N

• More than 10N

• 10N

A 20 kg bike accelerates at 10 m/s².  what was the force?

• 25 Newtons
• 20 Newtons
• 200 Newtons
• 10 Newtons

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NGSS.MS-PS2-2

What is the force on a 1000 kg elevator that is falling freely at 9.8 m/s²? The answer to this question is most likely (HINT: Look at the units!!!) -

• 9,800 N

• 9,800 m/s²

• 9,800 kg

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NGSS.MS-PS2-2

A basketball with a mass of 0.60 kg is accelerated with a force of 10.8 N. If resisting forces are ignored, what is the acceleration of the basketball to the nearest m/s²?

• 16 m/s²
• 17 m/s²
• 18 m/s²
• 19 m/s²

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

A force of 90N is applied to each cart below, which one will accelerate the fastest?

• Cart 1
• Cart 2
• Cart 3 
• Cart 4

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NGSS.MS-PS2-2

A cyclist cycles his bicycles with a force of 120 N.

If the total mass of the bicycle and cyclist is 80 kg, the acceleration is

• 0.67 ms^-2

• 0.80 ms^-2

• 1.25 ms^-2

• 1.50 ms^-2

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

A 20 kg bike accelerates at 10 m/s². Calculate the force on the bike.

• 25 kg

• 20 N

• 200 N

• 10 m/s²

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NGSS.MS-PS2-2

How much force is needed to accelerate a 25kg bowling ball at 2m/s².

• 50N

• 5N

• 12.5N

• 100N

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NGSS.MS-PS2-2