Respuesta :

As
a=v-u/t
a=500-1000/5
a=-500/5
a=-100ms^-2
Using the formula :

v= u+at

u(initial velocity)=1000
v(final velocity)=500
a(acceleration)=unknown
t(time)= 5

500=1000+a(5)
5a=500-1000
a=-500/5
= -100

Acceleration= -100m s-2