Question

Given the position function s(t), s(t) = t2 + 3t + 1, where s is measured in meters and t is in seconds, find the velocity and acceleration of the particle at t = 4 seconds.

11 m/sec; 2 m/sec2
2 m/sec; 0 m/sec2
11 m/sec; 0 m/sec2
12 m/sec; 2 m/sec2

Answer 1

Wet C

Answer 2

How did you find out C is the answer?

Answer 3

Can I use Calculus or should I do it without it

Answer 4

First derivative of position function gives velocity, second derivative gives acceleration

Answer 5

First derivative I got 2t+3

Answer 6

First derivative : 2t + 3 if t = 4, 2t + 3 = 11
Second derivative : 2

Answer 7

second i just got 2

Answer 8

So A?

Answer 9

Answer is A btw that guys is wrong

Answer 10

yup

Answer 11

Thanks!

Answer 12

you're welcome