Understanding Force and Motion

What type of force is being illustrated?

• balanced force

• unbalanced force

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Which of Newton's laws is represented by this image?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

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Why is it harder for the boy in Image B to get down the hill?

• Motion

• Friction

• Work

• Displacement

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Which of the following statements best describes Newton's First Law of Motion?

• An object will remain at rest or in uniform motion in a straight line unless acted upon by a net external force.

• The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

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

• The force of gravity acts between all masses.

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Which of the following is an example of a non-contact force?

• Friction

• Tension

• Gravitational force

• Normal force

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If a car is moving at a constant velocity, what can be said about the forces acting on it?

• The net force is zero.

• The net force is equal to the weight of the car.

• The net force is equal to the frictional force.

• The net force is equal to the applied force.

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Which of the following types of friction occurs when an object is moving through a fluid?

• Static friction

• Sliding friction

• Rolling friction

• Fluid friction

According to Newton's Third Law of Motion, if a force is exerted on an object, what happens to the object exerting the force?

• It remains unaffected.

• It exerts a force of equal magnitude and opposite direction.

• It exerts a force of greater magnitude in the same direction.

• It exerts a force of lesser magnitude in the opposite direction.

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A block is sliding down an inclined plane with a constant velocity. What can be inferred about the forces acting on the block?

• The gravitational force is greater than the frictional force.

• The frictional force is greater than the gravitational force.

• The gravitational force is equal to the frictional force.

• The normal force is greater than the gravitational force.

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