jg98271
contestada

A dog is running at 6.98 m/s. His human calls to him and 3.56 seconds later he is running at 6.18 m/s. What is his acceleration during this time?

Respuesta :


The equation of movement for this case is given by:

[tex] vf = at + vo [/tex]

Where,

vf: final speed

a: acceleration

t: time

vo: initial speed

Substituting values we have:

[tex] 6.18 = a (3.56) +6.98 [/tex]

Clearing the acceleration we have:

[tex] a = \frac{6.18-6.98}{3.56} [/tex]

[tex] a = -0.225 \frac{m}{s ^ 2} [/tex]

Answer:

his acceleration during this time is:

[tex] a = -0.225 \frac{m}{s ^ 2} [/tex]