Balanced Forces
What happens when two forces are equal and opposite?
The forces are balanced.
If a person is pushing a shelf to the left with 10 percent of force and another person is pushing on the shelf to the right with 20 percent of force; which way is it going?
To the right
What is inertia?
A. The force that stops every moving object
B. An object's resistance to changes in motion
C. The force that makes objects fall
D. The speed of moving objects
B. An object's resistance to change in motion.
Who is the scientist known for the three laws of motion?
Isaac Newton
If a shoe sits still on the table; are the forces balanced or unbalanced?
Balanced force
What happens when unbalanced forces act on an object
A. The mass increases
B. It always stops
C. its motion change
D. It moves faster
C. its motion changes
A baseball and a bowling ball are both sitting still. You push both of them at the same time and the same amount of force. But the bowling ball is harder to push.
Why is it harder to push?
A. It has less inertia
B. It has more inertia because it has more mass
C. Gravity does not affect the baseball
D. It had no force pushing on the bowling ball
B. It has more mass.
What happens to a toy car sitting still if no unbalanced force acts on it?
It stays still.
If two dogs pull a rope with equal force and the rope does not move, is the force balanced or unbalanced?
Balanced force
A student pushes a box to the right with a force of 25 N. Another student pushes the same box to the left with a force of 10 N. Friction pushes to the left with a force of 5 N.
What is the net force on the box and which direction does it go
A. 40 to the right
B. 10 to the right
C. 10 to the left
D. 40 to the left
B. 10 the the right
Why does a passenger lean backward when a car suddenly speeds up?
Inertia makes the passenger's body resist moving forward.
What will happen to an object moving through space if no unbalanced force acts on it?
It will keep moving at the same speed in a straight line.