sagarchapagain122
sagarchapagain122 sagarchapagain122
  • 11-07-2020
  • Physics
contestada


9. The displacement is given by x = 2 t^2 + t + 5. The acceleration at t = 2 s is
(a) 4 m/s2
(b) 8 m/s2
(c) 10 m/s2
(d) 15 m/s2
​

Respuesta :

ohiekulous
ohiekulous ohiekulous
  • 11-07-2020

Answer:

4 m/s2

Explanation:

let's find the derivative of x wrt t

x = 2t² + t + 5

dx/dt = 4t + 1

d²x/dt² = 4

the acceleration is 4 m/s²

Answer Link

Otras preguntas

A polygon has an angle sum of 360°, and each angle measures 90°. What is the polygon? A-Triangle B-Regular octagon C-Pentagon D-Square ---- Each angle meas
Weight gain occurs when a person consumes too much/many __________. A. calories B. fat C. carbohydrates D. protein Please select the best answer from the choice
A wheel has a circumference of 7 5/6 feet.How many times does it turn in 423 feet?
Answer and maybe an explanation.Thanks in advance.
Why do you think that many American think the first amendment is the mist important amendment?
The area of the atom surrounding the nucleus is mostly what
Which of the following could identify the transformation of a parabola with a vertex of (-4, -6) to parabola with a vertex of (1, /6)
whats geographic barriers separate India from the rest of the continent
How do the nutrients in soil become building materials for a plant to grow?
the sum of three consecutive even numbers is 78 , what is the first number