Balanced and Unbalanced Forces

Front

What is the physics term for any push or pull interaction between a system and the environment around it?

Back

force

Front

What is the unit used for force?

Back

Newton

Front

When an object continues to move in the same direction at the same speed, we consider the object to have:

Back

balanced forces

Front

When an object changes its motion and starts to accelerate, we consider the object to have:

balanced forces

,

unbalanced forces

Back

unbalanced forces

Front

An object that is moving will continue to move in a straight line with constant speed, if the net force acting on that object is:

Back

zero

Front

What is the net force acting on the object? Options: 20 N Right, 40 N Right, 20 N Left, 40 N Left

Back

20 N Right

Front

Which net force below could an object moving at a constant speed have? Options: 5 N, 10 N, 0 N, Both 5 N & 10 N

Back

0 N

Front

Will the box begin to move with a pushing force of 5 N to the left if there is 5 N of friction force in the opposite direction?

Back

No

Front

If this crate is in motion at a constant speed, what would be the minimum pushing force (to the left) to get the box to accelerate?

Back

6 N

Front

Pick the correct statement about forces and motion:

• For an object to move at a constant speed or accelerating it must have unbalanced forces.
• Objects moving at a constant speed have unbalanced forces while objects that are accelerating have balanced forces.
• Objects moving at a constant speed have balanced forces while objects that are accelerating have unbalanced forces.
• For an object to move at a constant speed or accelerating it must have balanced forces.

Back

Objects moving at a constant speed have balanced forces while objects that are accelerating have unbalanced forces.