jocelynnhdz1022 jocelynnhdz1022
  • 10-09-2019
  • Physics
contestada

What is the acceleration of the train if it takes 8 seconds to reach 45 m/s?

Respuesta :

kusidesmo
kusidesmo kusidesmo
  • 10-09-2019

Answer:5.6m/s^2

Explanation: Since the initial velocity (u) was not given, it's assume that the train was at rest hence it's initial velocity (u) =0

From Newton's first equation of motion,

Where v=u+at ,where v= final velocity ,u = initial velocity, a= acceleration and t= time

Now given v= 45 u=0 t=8 and a=? Substituting the values into the equation, thus : 45= 0+8a making a the subject in the relation , a= 45/8 = 5.6m/s^2. As the acceleration of the train

Answer Link

Otras preguntas

(has,have) any of the missing packages been located?
You're conducting a physics experiment on another planet. You drop a rock from a height of 2.3 m and it hits the ground 1.1 seconds later. What is the accelerat
F(x) = 4x^2 - 3x + 2kx + 1 What's the value of k for which the function has two zeros?? Can someone show me step by step?
prove the identity cos(A+B+C)=cosAcosBcosC-cosAsinBsinC-sinAcosBcosC-sinAsinBcosC
Give the domain of  f(x) = 9^(x-4) +7a.) x > 0b.) x < 7c.) x > 4d.) All Real Numbers
Which biological molecule is associated with iron (Fe) ions? A. Histone B. Catalase C. Chlorophyll D. Hemoglobin E. RNA polymerase
What is 5/9 equivalent to
Fill in the missing reactant: NaOH + _____ → NaClO₂ + H₂O a. Cl₂ b. HCl c. HClO d. HClO₂ e. HClO₃
is .01 less than .07
WHAT ARE PLANKTONS HABITAT