Newton's First & Second Laws of Motion

What is Newton's second law of motion?

• the acceleration of an object is equal to the net force acting on the object divided by the object's mass

• an object at rest will stay at rest unless acted on by a force

• for every action (force) in nature there is an equal and opposite reaction

• always brake at a stop sign

Define centripetal force.

• forces acting on an object with a net force of zero

• the tendency for an object to stay at rest

• a force that acts perpendicular to the direction of motion, toward the center of the curve in circular motion

• the force holding a stack of coins together

Explain circular motion.

• the position of an object

• moving in a straight line

• a push or pull of an object

• any motion in which an object is moving along a curved path

Solve the following problem using Newton's second law equation: A force of 10 N is applied to an object with a mass of 2 kg. What is the acceleration of the object?

• 8 m/s^2

• 20 m/s^2

• 5 m/s^2

• 12 N

Who was the scientist that created the laws of motion?

• Alfred Wegener

• Isaac Newton

• Albert Einstein

What is Inertia?

• the tendency of a body to resist a change in motion or rest

• the tendency of a body to be always moving

• properties that are only found in outer space

What is Newton's first law?

• An object in motion stays in motion unless acted by an unbalanced for

• An object at rest stays at rest unless acted by an unbalanced force

• unbalanced forces do not change motion

What is Newton's second law?

• E=mc2

• LXW

• a= f/m

What unit do we measure force in? 

• Newtons
• Joules
• Force
• Don't know

A ball is rolling on the floor and a force pushes it in the same direction, what will happen?

• The ball will go faster.
• The ball will slow down.
• The ball will stop. 
• The ball will fly in the air.