Page 66 - eEISBN FINALIZE

Uniform speed - a body through the same distance in the same time.

Displacement - distance taken by a body from one point to another. If a body starts from point A
and ends at point A again, then its displacement is empty. One vector quantity . His unit: meters

(m)

Distance - The total length of the path traveled by a body.

Velocity - the rate of change of displacement with respect to time in one particular direction. One

vector quantity.

velocity = displacement / time

= −1 ∶

Acceleration - the rate of changing of velocity with respect to time,

-2
Acceleration = (changing of velocity) / time ms : unit
-2
a = (v-u) / t ms : unit
If the velocity increases, the acceleration is positive but if the velocity decreases, the acceleration

is negative (deceleration / retardation).

5.2.1 Linear Motion
-1
Suppose a body starting with the initial velocity u ms , moves along a straight line with uniform
-2
-1
acceleration a ms until reaching the final velocity v ms in time t seconds and reaches a distance
of s meters.

Velocity-time graph:
-1
v (ms )

-2
a (ms )
v

u

0 t (saat)
Figure 5.2.1 t

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