Question

i need help with this problem
The acceleration function and the initial velocity for a particle moving along a line are: a(t)= 2t + 3, v(0)= -4, 0 15 years ago

Answer 1

do you know the formula for displacement in terms of initial velocity and acceleration?

Answer 2

i do not

Answer 3

okay, well it is:
s(t) = u*t+1/2*a*t^2

Answer 4

where u is the initial velocity, a is acceleration, and s is the displacement.

Answer 5

ok

Answer 6

substitute your values in that equation to get displacement

Answer 7

well i get 34.5 but the answer is still wrong

Answer 8

i dont know what i did wrong

Answer 9

you should get 28.5. Is that right?

Answer 10

how did u get that answer

Answer 11

i just substituted t = 3 and u = v(0) = -4

Answer 12

wow thank you

Answer 13

you are welcome.