Linear Motion and Newton's Laws

According to Newton's 3rd Law of Motion, what will happen to the back of the skateboard when the person pushes down on the front of the skateboard?

• A skateboard will propel the person forward

• The skateboard will move sideways

• The skateboard will move backward

• The skateboard will move upward

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Isaac Newton proposed three laws of motion. Which one of the following statements best describes why a person goes forward when a car suddenly stops.

• Acceleration is proportional to the net force on an object

• An increasing in force will result in a decrease in acceleration

• The stopping car is an action that results in a person moving forward (reaction)

• An object in motions stays in motion until an unbalanced force acts on it.

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According to Newton's 2nd Law of Motion, what will happen to the object if the pushing force were doubled?

• The acceleration of the object would double

• the acceleration of the object would decrease by 1/2

• The object will stop

• The object's mass will decrease

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Which of the following best explains Newton's 2nd law of motion?

• An object at rest stays at rest unless and unbalanced force acts upon it.

• The acceleration of an object is dependent upon the object's force and mass

• For every action, there is an equal and opposite reaction.

• An object in motion will stay in motion unless an unbalanced force acts on it

Which of the following terms best explains why a person feels "weightless" at point X in the picture?

• Acceleration

• Friction

• Gravity

• Inertia

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According to Newton's 3rd Law of Motion, how many pigs will be expelled to the right, when one pig is pulled back and released on the left?

• One ball will be expelled to the right

• Two balls will be expelled to the right

• Three balls will be expelled to the right

• There will be no motion

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What would be the mass of an object that has a force of 96 N and an acceleration of 12 m/s²? (F=MA)

• 1152 kg

• 8 kg

• 16 kg

• I don't like Math

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What is the net force of the car in the picture?

• 0 N

• 10 N

• 13 N

• 7 N

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A string with a ball attached to the end is swung in a circular motion. Assuming the string is released at point A, which direction will the ball most likely travel?

• It will follow the path of Z

• It will follow the path of Y

• It will follow the path of X

• It will follow the path of W

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Which one of Newton's Laws best explains why the ball in the picture above will take this path?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's law of gravity

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