Respuesta :

Given:

[tex] \triangle v [/tex] = 12 m/s

Time = 15 s

To find:

Deceleration = ?

Formula used:

Deceleration is given by,

a = [tex] \frac{\triangle v}{t} [/tex]

Solution:

Acceleration of the body is rate of increase of velocity. Deceleration of the body is negative acceleration i. e rate of decrease of velocity.

Thus, deceleration of the body is given by,

a = [tex] \frac{\triangle v}{t} [/tex]

where a is the deceleration of the body

v is the velocity

[tex] \frac{\triangle v}{t} [/tex] is rate of change of velocity

t is the time

a = [tex] \frac{12}{15} [/tex]

a = 0.8 m/ [tex] s^{2} [/tex]

Thus, deceleration is 0.8 m/ [tex] s^{2} [/tex].