Forces
A push or a pull that can make an object move, stop, or change direction.
What is a force
Forces that cause an object to speed up, slow down, or change direction.
What are unbalanced forces?
The type of forces acting on a person sitting in a chair.
What are balanced forces?
When forces are equal in size and opposite in direction.
What are balanced forces?
The total force acting on an object.
What is net force?
The unit used to measure force.
What are Newtons
If one side pushes with 90 N and the other 25 N, this is the net force.
What is 65 N?
The type of forces acting when you kick a soccer ball.
What are unbalanced forces?
The amount of net force when forces are balanced.
What is zero?
To find net force when two forces act in opposite directions, you do this.
What is subtract the smaller force from the larger one?
The two characteristics that describe every force: ___ and ___.
What are size and direction?
An object will accelerate when this happens.
What is when forces become unbalanced?
In tug-of-war, when one team pulls harder, the rope moves because of this.
What is an unbalanced force?
When you’re standing still, gravity pulls you down, but the ground pushes up with equal strength.
What is an example of balanced force?
If one side applies 100 N left and the other 35 N right, the net force is this.
what is 65 N to the left?
Isaac Newton
Who is the scientist who discovered the laws of motion.
The total force acting on an object when one side pushes harder.
What is net force greater than 0
When an airplane flies at a steady altitude and speed, the forces are said to be this.
What are balanced forces
When forces are balanced, the motion of an object does this.
What is no change in motion
When net force equals zero, the object’s motion does this.
What is stays still or moves at a constant speed?
Spring Scale
What is the tool used to measure the strength of a force.
In the two-box demonstration, this box moved because its forces weren’t equal.
What is box 2
A car accelerating at a green light is an example of this type of force.
What are unbalanced forces
When forces are balanced, the object is either at rest or moving at this speed.
What is a constant speed?
If one side pushes with 45 N and 15 N, and the other with 70 N, the net force and direction are this.
What is 10 N toward the 70 N side?