Question

10. An object initially at rest experiences an acceleration of 1.20 m/s2 for 6.10 s then travels at that constant velocity for another 8.40 s. What is the magnitude of the object's average velocity over the 14.5 s interval? m/s

Answer 1

Given is:-

acceleration

Now,

the final velocity of the object will be

by plugging all the values we get

which gives us

distance travelled during this time interval is

Now,

the distance travelled during time t₂ is

total distance travelled by the object is

and total time taken is

Now,

the average velocity is given by

by plugging all the values we get

which gives us