Force Motion and Energy - Denton ISD

8U3 ? 8.6A demonstrate and calculate how unbalanced forces change the speed or

direction of an object's motion;

applied force

Force applied to an object by another object.

balanced forces

Equal forces acting on one object in opposite directions.

Balanced Forces

Forces on an object that are equal in size and opposite in direction (don't cause any change in motion)

contact force

A force between two objects that are touching each other.

Direction

The path that an object is moving or facing

distance

the measurable space between two objects or points

elastic force

Force friction

force exerted by a material when it is stretched or compressed

A push or pull that can change the motion of an object

A force that opposes motion between two surfaces that are in contact.

gravitational force

an attractive force that acts between any two objects

If a car is speeding up, what will Bigger arrow pushing forwards.

the force arrows look like?

Force from gravity and the ground

still the same.

If an object is not moving, or traveling at the constant speed, what would the force arrows around it look like?

What do force arrows on a car look like if a car is slowing down?

Each arrow is the same size as the opposite arrow. This indicates forces acting on the car are balanced, so it is neither going faster or slowing down

Bigger arrow pushing backwards. The opposite forces of gravity pushing down, and the ground pushing up are still the same.

In what units are weight measured?

Newton

kinetic energy

Energy of motion

Law of Conservation of Momentum

states that the total momentum of objects that collide with each other is the same before and after the collision

magnetic force

The attraction or repulsion between magnetic poles.

Magnitude Mass

A number that tells how much of something there is; quality of being big

The amount of matter in an object

Motion net force

A change in an object's position, direction, or location

The combination of all the forces acting on an object.

potential energy

stored energy

spring force tension force

The force exerted by a compressed or stretched spring upon any object that is attached to it.

The force exerted on an object by a string or rope.

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