Exploring the Concept of Force in Physics

What is the basic definition of force as per textbooks?

• A measure of an object's mass

• A type of energy

• A push or pull upon an object

• A change in the shape of an object

What is the normal force?

• A force that acts parallel to the surface

• A force that acts in the same direction as gravity

• A force that acts in the opposite direction of friction

• A force that acts perpendicular to the surface

What is the net force acting on a stationary object with balanced forces?

• Equal to zero

• Cannot be determined

• Less than zero

• Greater than zero

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What is required for an object to change its state of motion?

• Balanced forces

• No force

• A net force

• Gravitational force

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Why does a ball stop moving after being kicked?

• Because of air resistance

• Because of gravitational force

• Because of normal force

• Because of friction

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What force acts in the opposite direction to the applied force when a ball is kicked?

• Magnetic force

• Normal force

• Gravitational force

• Friction

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What happens to an object moving at uniform velocity if the net force on it is zero?

• It will decelerate

• It will continue to move at the same velocity

• It will accelerate

• It will come to a stop

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In a frictionless environment, what will happen to a ball moving at a uniform velocity?

• It will eventually stop

• It will continue moving at the same velocity

• It will accelerate

• It will decelerate

What will happen to a ball moving at 2m/s if an external force is applied from the left?

• It will move in the opposite direction

• It will stop

• It will accelerate

• It will decelerate

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NGSS.MS-PS2-2

What happens to the velocity of a ball when an external force is applied?

• It remains the same

• It changes

• It stops

• It reverses direction

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