6300
N
Explanation:
We will employ the following equation of kinematics
x
=
1
2
a
t
2
which describes an object traveling in one dimension with a constant acceleration and an initial velocity of zero.
We know the displacement and the time elapsed so we may solve for the acceleration:
40.0
m
=
1
2
a
(
3.0
s
)
2
Solving for
a
yields:
a
=
8.89
m
s
2
Now, knowing the acceleration of the car as well as the mass of the car we can apply Newton's second law, which states
F
net
=
m
a
All we need to do is plug in our values for
m
and
a
:
F
net
=
710
kg
⋅
8.89
m
s
2
=
6311.9
N
Considering the fact that our final answer should have only two significant digits, we will round to the nearest hundred:
F
net
Answer:
casa. Completa las oraciones con el pronombre de objeto directo correcto, según el contexto.
1. Tu ropa está sucia. ¿Por qué no ____ lavas?
2. Ellos tienen muchos libros. ____ tienen en la estantería del despacho.
3. La casa de mi mamá tiene muchas ventanas, pero no ______ abre todos los días.
4. Profesora, Ud. debe usar la cochera. ¿ ______ve allí?
5. ¿Quieres ir al cine con nosotros? _____ llamamos antes de salir.
Answer:
Distance is 50m
Displacement is 0m
Explanation:
Distance is based on the amount of length you covered, regardless of where you end.
Displacement only considered where you started and where you ended, which is at the same spot in this case. Therefore, no displacement.
