Question

Instantaneous and average velocity?

Answer 1

Determine its instantaneous velocity at the following times.
(a) t = 10.0 s
(b) t = 27.5 s

Determine its average velocity between the following times.
(c) t = 0 and t = 10.0 s
(d) t = 25.0 s and t = 30.0 s
(e) t = 40.0 s and t = 50.0 s

Answer 2

when you say instantaneous velocity... it is the velocity at specified time... as per your questions, just read the velocity corresponds to each given time...
in (a), at t = 10.0 s, it seems v = 2.5 m/s...

Answer 3

I believe the 2nd one.

Answer 4

for average velocity, it is simply the same as how we get average of numbers, so there are multiple values or velocity involve depending on the time range involve...
in (d) we have v(25) = approx 8 m/s and v(30) = approx 16 m/s, so the average velocity\[\bar{v}=\frac{8+16}{2}=\frac{24}{2}=12~m/s\]

Answer 5

i left the others for you to solve...

Answer 6

thank you