Crash Amplify Article Force and Motion

Front

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

Back

The object will experience a change in motion, which can include stopping, changing direction, or continuing in the same direction depending on the masses and velocities involved.

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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

How does mass affect the motion of colliding objects?

Back

In a collision, the object with greater mass will generally have a greater influence on the motion of the object with lesser mass.

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Front

What is the principle of conservation of momentum?

Back

The total momentum of a closed system remains constant if no external forces act on it. This means that the momentum before a collision is equal to the momentum after the collision.

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Front

What is force?

Back

Force is a push or pull on an object that can cause it to accelerate, change direction, or change shape.

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Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's second law, force equals mass times acceleration (F = ma). This means that the greater the mass of an object, the more force is needed to accelerate it.

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Front

What happens during a perfectly elastic collision?

Back

In a perfectly elastic collision, both momentum and kinetic energy are conserved. The objects bounce off each other without losing energy.

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Front

What is a perfectly inelastic collision?

Back

In a perfectly inelastic collision, the colliding objects stick together after the collision, and momentum is conserved, but kinetic energy is not.

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Front

What is the effect of velocity on the motion of objects?

Back

Velocity is the speed of an object in a given direction. Changes in velocity can affect how far and in what direction an object moves after a collision.

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Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.