Crash Amplify Article Force and Motion

Front

What happens to an object in motion when it collides with another object?

Back

The object in motion will exert a force on the other object, and both objects will experience forces in opposite directions.

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NGSS.MS-PS2-1

Front

What is the relationship between mass and force in a collision?

Back

In a collision, the object with greater mass will experience less acceleration than the object with smaller mass when the same force is applied.

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Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.

Front

What is the principle of action and reaction?

Back

For every action, there is an equal and opposite reaction. This means that when one object exerts a force on another, the second object exerts a force of equal strength in the opposite direction.

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NGSS.MS-PS2-1

Front

How does velocity affect the outcome of a collision?

Back

The greater the velocity of an object, the greater the force it will exert during a collision, potentially causing more damage.

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Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity. It is a vector quantity, meaning it has both magnitude and direction.

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NGSS.HS-PS2-2

Front

How does mass affect momentum?

Back

An object with a larger mass will have more momentum than an object with a smaller mass if both are moving at the same velocity.

Front

What happens to momentum in a closed system during a collision?

Back

In a closed system, the total momentum before the collision is equal to the total momentum after the collision.

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NGSS.HS-PS2-2

Front

What is the difference between elastic and inelastic collisions?

Back

In elastic collisions, both momentum and kinetic energy are conserved. In inelastic collisions, momentum is conserved, but kinetic energy is not.

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Front

What role does friction play in motion?

Back

Friction is a force that opposes motion between two surfaces in contact. It can slow down or stop moving objects.