What is the acceleration of a 70 kg mass being pulled by a 140 n force?

2 m/s^2

Explanation:

Newton's second law gives us the relationship between force, mass and acceleration:

where

F is the force applied

m is the mass

a is the acceleration

In this problem, we have:

m = 70 kg is the mass

F = 140 N is the force

Solving the equation for a, we find the acceleration:

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer