41 terms

Balanced rope

a. unbalanced rope

b. balanced rope

b. balanced rope

Balanced box

a. balanced box

b. unbalanced box

b. unbalanced box

Unbalanced -5N

a. balanced -5N

b. unbalanced -5N

b. unbalanced -5N

Balanced truck

a balanced truck

b. unbalanced truck

b. unbalanced truck

Balanced tug of war

a. balanced tug of war

b. unbalanced tug of war

b. unbalanced tug of war

Unbalanced -100N

a. balanced -100N

b. unbalanced -100N

b. unbalanced -100N

Balanced Force 0N

a. unbalanced 10N

b. balanced 0N

b. balanced 0N

Balanced parked

A truck parked on the road.

a. balanced parked

b. unbalanced parked

a. balanced parked

b. unbalanced parked

Unbalanced accelerating

A car accelerating (increasing speed) on the highway.

a. balanced accelerating

b. unbalanced accelerating

a. balanced accelerating

b. unbalanced accelerating

Balanced sit

A person sitting in a chair remaining still.

a. balanced sit

b. unbalanced sit

a. balanced sit

b. unbalanced sit

add

To find the net force when forces are pushing or pulling in the SAME direction, ________ them together.

subtract

To find the net force when forces are pushing or pulling in OPPOSITE directions, ________ the smaller force from the larger force.

balanced zero

When the net force is zero

a. balance zero

b. unbalance zero

a. balance zero

b. unbalance zero

unbalanced greater than zero

When the net force is a number greater than zero, the forces are ________.

a. unbalanced greater than zero

b. balance greater than zero

a. unbalanced greater than zero

b. balance greater than zero

10 N right

What is the net force in the picture above?

0 N

What is the net force in the picture above?

25 N left

What is the net force in the picture above?

120 N down

What is the net force in the picture above?

7 N down

What is the net force in the picture above?

unbalanced cube

Are the forces pushing on this box balanced cube, unbalanced cube, or combined?

balanced cube

Are the forces pushing on this box balanced cube, unbalanced cube, or combined?

unbalanced square

Are the forces pushing on this box balanced square, unbalanced square, or combined?

N

What is the abbreviation for Newtons?

Newton

Term/unit used to describe force

Forces

Push or Pull

Unbalanced Force

unequal forces: causes a change in the object's motion

Balanced Force

equal forces; does not change an object's motion

Friction

a force that two surfaces exert on each other when rub against each other (slows objects down to a stop)

Gravity

the force that pulls objects toward each other

Mass

the measure of the amount of matter in an object

Weight

the gravitational force exerted on a person or object at the surface of a planet

Air Resistance

a type of fluid friction that acts on objects going through the air

Motion

The state in which one object's distance from another is changing

Speed

how fast object move over a given distance

Acceleration

a change in speed

Calculate the speed. Distance traveled is 100m in 20 s.

5m/s

Calculate the speed. A car travels 5meters in 10 seconds.

0.5m/s

Calculate the speed. A car travels 10m in 5 seconds.

2m/s

Calculate the speed. A train travels 42 m in 7 seconds.

6m/s

A car moves with 4N to the left, another with 2N to the right. Which describes the motion of the two cars

They will accelerate steadily to the left with 2N.

A car moves with 3N to the left, another with 1N to the right. Which describes the motion of the two cars?

They will accelerate steadily to the right with 2N.