Assignment:
If the speed ( in m/sec ) of a particle moving on the x-axis at time t seconds (t>0) is given by:
V(t)=t^3-8t^2+15t+10
estimate during what time period the speed of the particle is less than 10m/sec.
a t=2/t=4seconds
b t=4/t=6 seconds
c t=4/t=5 seonds
d t=3/t=5seconds