Newton's Laws of Motion

• Yes

• No

• Isn't that a type of cookie?

An object at rest tends to remain at rest.

An object in motion tends to stay in motion...

at a constant velocity and in a straight line...

until it is acted upon by an unbalanced force.  

An object at rest tends to remain at rest. An object in motion tends to remain in motion at a constant velocity and in a straight line until it is acted upon by an unbalanced force.  

F=ma

F = ma

F=ma

Newtons

kilograms

m/s²

• Elon Musk

• rockets

• cars

F = ?

m = 5,000,000 kg

a = 70 m/s²

^{First, drop all units and fill in the known variables.}

^{Second, know that numbers and letters next to each other imply multiplication.}

^{Then, multiply the numbers (ma) and this equals the Force.}

^{Last, Force is measured in Newtons.}

F=ma

F = ?

m = 5,000,000 kg

a = 70 m/s²

F = 5,000,000 x 70

F = 350,000,000 Newtons

Action/Reaction

​

paddle moving back =

boat moving forward

Rocket fuel = action force

Rocket propelling = reaction force