Physics Forces and Motion Quiz

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The tendency of an object to resist changes in its motion. An object at rest wants to stay at rest, and an object in motion wants to stay in motion.

The overall force acting on an object. It's the sum of all the individual forces acting on it.

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

A force that opposes motion between two surfaces in contact.

A force that opposes the motion of an object through the air.

A non-contact force that attracts objects with mass towards each other.

Forces that cancel each other out, resulting in no change in motion.

If the net force acting on an object is zero, the object is either at rest or moving at a constant speed in a straight line.

When forces are unbalanced, the object will accelerate in the direction of the net force.

The net force is calculated by adding all the forces acting on an object, taking into account their direction (positive or negative).

This law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This means that a greater force will produce a greater acceleration, and a larger mass will result in a smaller acceleration.

The rate at which an object changes its velocity. It can be either an increase in speed (positive acceleration) or a decrease in speed (negative acceleration, also known as deceleration).

A push or pull that can cause an object to start moving, stop moving, or change its direction. It's measured in Newtons (N).

The amount of matter in an object. It's a measure of an object's inertia, or resistance to change in motion. It's measured in kilograms (kg).

The formula for Newton's Second Law is F = m * a, where F is force (in Newtons), m is mass (in kilograms), and a is acceleration (in meters per second squared).

How fast something is moving, measured in meters per second (m/s).

How fast something is moving in a specific direction, measured in meters per second (m/s).

An object with a larger net force acting on it will have a greater acceleration than an object with a smaller net force, assuming both objects have the same mass.

To convert grams to kilograms, divide by 1000.

For every action (force), there is an equal and opposite reaction (force). Forces come in pairs.

Two forces that act on different objects and are equal in magnitude but opposite in direction.

A collision where kinetic energy and momentum are conserved.

A collision where momentum is conserved but kinetic energy is lost.

Kinetic energy is lost, usually converted into heat, sound, or deformation of the objects.

For every action, there is an equal and opposite reaction. This means that when one object exerts a force on a second object, the second object exerts an equal and opposite force back on the first object.

When you jump, you push down on the ground (action), and the ground pushes back up on you (reaction). This upward force propels you into the air.

The rocket engine expels hot gases downwards (action). The gases pushing down on the air cause an equal and opposite force pushing the rocket upwards (reaction).

When you row a boat, you push the oars backwards against the water (action). The water then pushes back on the oars with an equal force, propelling the boat forward (reaction).

When you release a balloon, the air inside it rushes out, pushing downwards (action). This creates an equal and opposite force that pushes the balloon upwards (reaction).