Newton's Second Law of Motion (Warm-Up)

A change in velocity over time is called ___________.

• speed
• force
• acceleration
• direction

What Unit do we Measure Force in? 

• Newtons
• Joules
• Force
• Don't know

which box has more acceleration?

• top

• bottom

What do each of the letters correctly represent?

• Funny, Marbles, Arrive

• Force, Mass, Acceleration
• Free, Mass, Access
• Force, Magnesium, Arsenic

what is the correct formula for force?

• F=ma

What happens when unbalanced forces act on an object at rest?

• the object remains at rest
• the object begins moving in an unpredictable direction
• the object begins moving in the direction of the net force
• the object begins moving opposite to the direction of net force

Football A has a greater mass than football B.  Which football will have greater acceleration when both are thrown with the same force in the same direction?

• Football A
• Football B
• They will have the same acceleration
• Mass has no effect on acceleration