In: Physics
A crate with mass 27.0kg initially at rest on a warehouse floor is acted on by a net horizontal force of 126N . |
Part A What acceleration is produced?
SubmitMy AnswersGive Up Part B How far does the crate travel in 10.5s ?
SubmitMy AnswersGive Up Part C What is its speed at the end of 10.5s ?
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apply the relation between force and accleration as F=
ma
where m is mass
a is accleration and
F is force
so as we need
part A: accleration a = F/m
a = 126/27
a = 4.667 m/s^2 ------------<<<<<<<<<<<<<<<<Answer to part A
-------------------------------------
part B :
use the kinematic equation S = ut + 0.5 at^2
where a is accleration = 4.67 m/s^2
t is time = 10.5 secs
as it starts from rest initial velocity u = 0
so
S = x = distance travelled = 0.5 * 4.67 * 10.5 *10.5
x = 257.44 meters------------<<<<<<<<<<<<<<<<Answer to part B
-----------------------------------------------
part C:
use again the Kinematic equation V = u + at
V = 0 + (4.67* 10.5)
V = 49.035 m/s----------------------<<<<<<<<<<<<<<<<<Answer to part C