Newton's Second Law of Acceleration

What unit do we measure force in?

• Kilometer/hr

• Joules

• Seconds

• Newtons

Two students are in a baseball game. The first student hits a ball very hard and it has a greater acceleration than the second student who bunts the ball lightly.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

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

If you increase the mass on an object, its acceleration

• decreases

• stays the same

• also increases

• stops

What is Newton's 2nd Law?

• F=ma

• Every action has an equal and opposite reaction

• An object at rest stays at rest, an object in motion stays in motion.

• Friction

F=MA
An object of mass 10 kg is accelerated upward at 2 m/s².  What force is required? 

• 20 N

• 2 N

• 5 N

• 0 N

What Unit do we Measure Force in? 

• Newtons

• Joules

• Force

• Kilograms

If you increase the mass of an object, its acceleration
(a)  

• decreases

• stays the same

• also increases

• stops

A force of 90N is applied to each cart below, which one will accelerate the fastest?

• Cart 1

• Cart 2

• Cart 3 

• Cart 4

Which shopping cart will have more acceleration?  

• The empty shopping cart

• The shopping cart that's full

• They will be the same