Force Basics
What is a force?
A push or pull on an object
Pushing a door is an example of what type of force?
A push force
What is gravity?
A force that pulls objects toward the center of the Earth
What is friction?
A force that works against movement
What happens when forces on an object are balanced?
The object stays still or continues moving at the same speed
What unit do we use to measure force?
Newtons
Pulling a rope in a tug of war is an example of what type of force?
A pull force
What happens to an object when gravity is the only force acting on it?
It falls toward the Earth
Does friction make it easier or harder to move objects?
Harder
What is an unbalanced force?
A force that causes a change in an object's motion
True or False: Forces can only cause objects to move
False, forces can also stop, slow down, or change the direction of an object
What happens when two forces are applied in opposite directions?
The object will move in the direction of the stronger force?
False: gravity is weaker on the Moon
What kind of surface has more friction, rough or smooth?
Rough surfaces
What happens when unbalanced forces act on an object?
The object moves in the direction of the stronger force
What is the result of a force being applied to an object?
It can change the object's speed, direction, or shape
When you pull on a wagon, how does the force affect its motion?
It accelerates or moves the wagon
Which force keeps planets in orbit around the Sun?
Gravitational force
Give an example of how friction is useful
Friction helps cars stop when brakes are applied
True or false: balanced forces can cause an object to start moving
False
What is the term for a force that works without physical contact?
A non-contact force (like gravity or magnetism)
The net force increases, making the object move faster in that direction
If you drop a feather and a rock on Earth without air resistance, which one hits the ground first?
They hit the ground at the same time (due to gravity)
What happens to the motion of an object when there is no friction?
The object keeps moving without slowing down
If a soccer ball is sitting on the ground and someone kicks it, what kind of force is acting on it?
Unbalanced force, the ball moves because the force applied by the kick is stronger than the resistance