2nd Law

An object's velocity can be changed by changing its speed, its direction, or both.

• True
• False

The increasing speed of a falling object is caused by _____________.

• force
• mass
• speed
• gravity

Newton's second law of motion describes acceleration as force divided by __________.

• mass
• inertia
• speed
• direction

According to __________, the acceleration of an object is equal to the net force acting on the object divided by the object's mass. 

• Newton's Second Law
• Newton's Third Law
• Newton's First 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

F= mass * acceleration

A 20 kg bike accelerates at 10 m/s². what is the force acting upon it?

• 25 Newtons

• 20 Newtons

• 200 Newtons

• 10 Newtons

What is the net force?

• 40 N left
• 0 N Balalnced
• 400 N right
• 40 N right

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

• Volts

• Lumens

What is a Balanced Force?  Two objects where...

• They both have equal force 
• One has more force than the other
• Both have no force
• One has more gravity than the other