Answer:
500 Ns
Explanation:
According to the impulse theorem, the change in momentum of an object is equal to the impulse exerted on it. Mathematically:
where
is the change in momentum of the object
I is the impulse exerted, which is the product of
F, the net force exerted
, the time interval during which the force is applied
In this problem,
F = 100 N is the force applied on the wagon
is the time interval
Substituting, we find the change in momentum of the wagon:
D. definition of perihelion: the point in the orbit of a planet, asteroid, or comet at which it is closest to the sun. (the sun is an example of the star)
Answer:
Dx = -0.5
Dy = -0.25
Explanation:
Two vectors are given in rectangular components form as follows:
A = i + 6j
B = 3i - 7j
It is also given that:
A - B - 4D = 0
so, we solve this to find D vector:
(i + 6j) - (3i - 7j) - 4D = 0
- 2i - j = 4D
D = - (2/4)i - (1/4)j
D = - (1/2)i - (1/4)j
<u>D = - 0.5i - 0.25j</u>
Therefore,
<u>Dx = -0.5</u>
<u>Dy = -0.25</u>
Answer:
You need the attachment, sorry I can't answer :(
Answer:
Centripetal Acceleration = 2.701 m/s²
Explanation:
Given:
Starting from rest so initial angular velocity ωi = 0 rad/s
Final angular velocity ωf= 78 rev/min =78 × 2π /60 rad/s = 8.168 rad/s
Radius of Rim =d/2 =12/6= 6 in = 6× 2.54 cm =15.24 cm = 0.1524 m
angular acceleration α = (ωf - ωi)/t = (8.168 rad/s - 0 rad/s)/2.91 s
α =2.807 rad/s²
now to find angular velocity at 1.5 s we have
ω = α × t = 2.807 rad/s² × 1.5 s = 4.210 rad/s
so centripetal acceleration ac = ω² r = (4.210 rad/s)² × 0.1524 m
ac= 2.701 m/s²