4th - 3 laws of motion

1st law. Complete the definition: "An object at rest stays at rest, and an object in motion stays in motion...

• With the same speed and direction... Unless acted upon by an unbalanced force."

• With more speed and direction... Unless acted upon by an unbalanced force."

• With less speed and direction... Unless acted upon by an unbalanced force."

• With the same speed and direction... Unless acted upon by a balanced force."

1st law. Complete the definition: "Objects continue to do what they're doing unless...

• Some external unbalanced force acts on them"

• Some external balanced force acts on them"

• Some interrnal unbalanced force acts on them"

• Some internal balanced force acts on them"

1st law. Complete the statement: "No matter the size, if there is not an external force,

• the object will not move"

• the object will move"

• The object will stay"

• the object will not know what to do"

1st law. Complete the statement: "No matter the size, if the object is already moving,

• it is difficult to stop it or change its direction"

• it is impossinle to stop it"

• it is impossible to change its direction"

• it is difficult to make it move faster"

2nd law. Define: Acceleration.

• Change in speed (increasing or decreasing).

• Change in motion (increasing or decreasing).

• increase of the speed.

• decrease of the speed.

2nd law. Acceleration always require:

• Force.

• Direction.

• Speed.

• Measure.

What is the unit to measure force?

• Newtons (N)

• Meters (m)

• Kilograms (Kg)

• Strongs (S)

3rd law. Complete the definition: "Every action has...

• an equal and opposite reaction."

• an equal and possitive reaction."

• an equal and simmilar reaction."

• unequal and opposite reaction."

Select all the correct answers. Examples of Newton's 3rd law.

• Walking.

• Swimming.

• Birds flwying.

Select true or false.

Newton's three laws of motion only apply on Earth due to the gravity.

• True

• False