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A 10.-kilogram object, starting at rest, slides down a frictionless incline with a constant acceleration of 2.0 ms for 40 seconds
What is the velocity of the object at the end of the 4.0 seconds?
Select one
a. 16 m/s
b. 20 mis
c. 8.0 m/s
Od 4.0 m/s
Check

A 10kilogram object starting at rest slides down a frictionless incline with a constant acceleration of 20 ms for 40 seconds What is the velocity of the object class=

Respuesta :

skyluke89

The velocity of the object after 4.0 seconds is 8.0 m/s

Explanation:

The motion of the object is a uniformly accelerated motion (constant acceleration), therefore we can use the following  suvat equation:

[tex]v=u+at[/tex]

where

v is the final velocity

u is the initial velocity

a is the acceleration

t is the time

For the object in this problem, we have:

u = 0 (it starts from rest)

[tex]a=2.0m/s^2[/tex] is the acceleration

t = 4.0 s is the time elapsed

Solving for v, we find the final velocity:

[tex]v=0+(2.0)(4.0)=8.0 m/s[/tex]

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