Forces
name the four forces we learned about
applied, normal, friction, gravity
What is Newton's Second Law?
F = ma
What is torque?
torque causes rotation, but it is not a force!
What is the equation for momentum?
p = mv
What is your favorite holiday song?
good for you
hindering
Explain why when you pull the table cloth from a table, the objects on the table stay on the surface.
inertia! the objects are already at rest, so they will want to stay at rest
What is the equation for torque?
T = Fd
What is the momentum of a 3kg object moving 3 m/s to the left?
-9 kgm/s
What is another name for Santa?
St.Nicholas
Is there gravity in space? What is it called?
yes! mocrogravity
Will the forces applied on objects always be equal and opposite when they collide?
yes, because of Newton's Third Law
If there is a force applied at the pivot point, does it cause torque on the object?
no! the radius, or distance from the pivot point, would be zero, so the torque is also zero
Is momentum always conserved? (for our purposes)
yes!
How many days does Kwanzaa last?
seven
Does an object moving at a constant velocity have balanced or unbalanced forces?
balanced
What is one example of Newton's Third Law in your daily life?
think! think! think!
When will an object be balanced? (think about torque)
if the torque on either side of the pivot point is the same
How many federal holidays fall between November and January? (including November and January)