Collisions

Front

Collision Noun

---

[kuh-lizh-uhn]

Back

Collision

---

An event where two or more objects interact and exert forces on each other, which affects their motion.

---

Example: Two objects crash into each other, showing a powerful impact where they break apart. This demonstrates a collision, an event where objects exert strong forces on each other.

Front

Force Noun

---

[fors]

Back

Force

---

A push or pull that is exerted by one object on another, causing a change in the object's motion.

---

Example: A person pushing a box demonstrates a force, which is a push or a pull that can make an object move.

Front

Exert Verb

---

[ig-zurt]

Back

Exert

---

To apply or put a force into action, such as when one object pushes or pulls on another object.

---

Example: Gravity exerts a downward force on the ball, causing it to have the potential to roll down the ramp.

Front

Mass Noun

---

[mas]

Back

Mass

---

A measure of the amount of matter in an object, which determines its resistance to a change in motion.

---

Example: A balance scale shows a rock has more mass than a feather, causing the scale to tip towards the rock.

Front

Velocity Noun

---

[vuh-los-i-tee]

Back

Velocity

---

The rate of change of an object's position with respect to a frame of reference, including both speed and direction.

---

Example: This diagram shows that velocity is an object's speed in a specific direction, like traveling directly from Point A to Point B.

Front

Net Force Noun

---

[net fors]

Back

Net Force

---

The sum of all forces acting on an object, which determines the change in the object's state of motion.

---

Example: This diagram shows two opposing forces on an object: a 600N downward force of gravity and a 200N upward force of air resistance.

Front

Kinetic Energy Noun

---

[ki-net-ik en-er-jee]

Back

Kinetic Energy

---

The energy an object possesses due to its motion, which depends on both its mass and its speed.

---

Example: A soccer ball that has been kicked is in motion, and this energy of motion is called kinetic energy.

Front

Reference Frame Noun

---

[ref-er-uhns freym]

Back

Reference Frame

---

A coordinate system or a set of axes within which to measure the position, orientation, and motion of objects.

---

Example: This image shows two scenarios where words like 'right' or 'home' depend on your point of view, which is your reference frame.