1st Half Forces and Motion Flashcards
State the unit for mass
Kg
State the unit for speed
m/s
State the unit for acceleration
m/s2
State the unit for force
N
State the unit for time
s
What does a stand for?
acceleration
What does t stand for?
time
What does m stand for?
momentum
What does v stand for?
final velocity
What does u stand for?
initial velocity
What does F stand for?
Force
State the equation involving speed, distance and time
Speed = distance / time
s=d/t
State the equation involving final velocity
(final velocity)2 = (initial velocity)2 + (2 x acceleration x distance)
Whats the difference between vector and scalar quantities?
Scalar - magnitude only e.g. speed
Vector - magnitude and direction e.g. velocity
Name some scalar quantities
speed
Name some vector quantities
velocity
force
Force can change the
speed, shape or direction of an object
State Newtons 1st law
An object remains stationary or at constant velocity unless there is a resultant force on it
Zero resultant force means object is stationary
Weight is…
A force
What is Newtons 2nd law?
When there is a resultant force on a body, it will accelerate according to the equation
Force = mass x acceleration
F=ma
