Studied by 30 people
formula for acceleration
(Final Velocity - Starting Velocity)/ time
formula for speed
speed = distance / time
formula for average speed
Average speed = total distance / total time
distance is a _ quantity, it is always _
scalar, positive
displacement does not depend on _, it is a _ quantity
how to find it using a graph
path, vector
area of velocity - time graph
average speed =
Savg for equal time interval
Savg for equal distance
total distance / total time
S1 + S2 / 2
2 S1 S2 / S1 + S2
uniform motion
equal distance in equal time in one direction
uniform velocity: avg v = instantaneous v
when a = 0
S = vt
uniform motion (constant velocity)
equations of motion
v = u + at
S = ut + (1/2) at^2
v^2 - u^2 = 2aS
motion under gravity: non uniform motion with uniform acceleration
object is dropped from some height
T, vt, vground, v avg
T = sq root (2H / g)
vt = gt, vground = sq root (2gH)
vavg = sq root (gH / 2)
river downstream
meaning, t =
Vman is same as Vriver (direction)
t = S / vm + vr
river upstream
meaning, t =
Vman is opposite to Vriver (direction)
t = S / vm - vr
Important Terms
Acceleration avg
Average Velocity
Only valid when constant Acceleration
Velocity mid
Gallileo’s ratio in 1sec, 2sec and 3 sec
Gallileo’s ratio in 1st, 2nd and 3rd
Displacement time graph
Motion under gravity
Time of flight
Velocity at ground
distance and displacment?
Note
Flashcard