Newtonian Mechanics

John exerts a force on 5N on Sean's hand. What is the force that Sean's hand exerts on John'?

• Greater than 5N

• Less than 5N

• Equal to 5 N

• Sean's does not exert a force on John's

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NGSS.HS-PS2-1

As the angle of the incline increases, what happens to the normal force?

• The normal force increases

• The normal force decreases

• The normal force is not affected by the incline

• The normal force is only dependent on the force due to gravity

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NGSS.HS-PS2-1

Which of the following is not a necessary step in the problem solving strategy?

• Free Body Diagram
• Find the components of the forces
• Determine or not the system is in equilibirum
• All steps are completely necessary

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NGSS.HS-PS2-1

The Earth pulls downward on a pingpong ball with a force  of 1N. If this is the "action" force, what is the "reaction" force?

• The ground exerts a force of 1N on the ping pong ball
• The ping pong ball exerts a force of 1 N on the Earth
• The ping pong ball pushes down on the earth with a force of 1N
• The is no reaction force when a gravitational force is involved

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NGSS.MS-PS2-1

NGSS.MS-PS2-4

Given the FBD, which of the following must be true?

• The frictional force must be accelerating the system to the left.

• The box must be accelerating to the right.

• The box must be moving to the right.

• The FBD is incorrectly drawn. This situation isn't possible

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NGSS.HS-PS2-1

Which of the following is true about the system shown?

• The system is not accelerating.
• The tension between m₂ and m₁ is less than the tension between m₂ and m₃
• The acceleration of the system only depends on m₃
• None of the other answers are true

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NGSS.HS-PS2-1

A uniform rope of weight 10 N is attached to a hook as shown below. A box of weight 50 N is attached to the rope. What is the tension in the rope?

• 60 N
• 40 N
• 50 N
• It varies from 60 N at the top to 50N at the bottom

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NGSS.HS-PS2-1

Camille launches has a catapult that changes the velocity of a ball (m= 2 kg) from 0 to 10 m/s in one sec. What is the average force that is exerted on the ball during launch?

• 20 N

• 5 N

• 8 N

• 0.2 N

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NGSS.HS-PS2-1

Newton's First Law states....

• an object wants to maintain its motion
• if the forces are balanced, then the velocity will change
• a block will accelerate if a force acts upon it.
• F=ma

Which of the following statements is true about the image above?

• The accelerations of the blocks will vary according to their mass

• The net force acting on each block is the same

• The blocks will experience the same acceleration

• The 3m box will eat the 2m and the m boxes

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NGSS.HS-PS2-1