Answer:
The first option, energy is transferred.
Explanation:
The velocity is 10m/s because velocity is calculated by dividing time from displacement so 5000 divided by 500 is 10.
Answer:
C. Intarsia
Explanation:
This is a knitting skill that involves different colour patterns. Each color has a yarn for it. However, wood cut in shapes can also be filled with different colour patterns too.
Answer:
7.74 seconds
Explanation:
u = 25 m/s
h = - 100 m
Let it takes time t to hit the ground.
Use second equation of motion
Take positive sign as time can never be negative.
t = 7.74 s
Thus, the package takes 7.74 seconds to reach the ground.
(a) The final velocity if the trucks lock together after the collision is 7.66 m/s.
(b) The decrease in the kinetic energy after the collision is 11,165.1 J.
<h3>
Conservation of linear momentum</h3>
The final velocity of the two truck system after the collision is determined by applying the principle of conservation of linear momentum as shown below;
m₁u₁ + m₂u₂ = v(m₁ + m₂)
4285(9.35) + 5495(6.35) = v(4285 + 5495)
74,958 = 9,780v
v = 74,958/9780
v = 7.66 m/s
<h3>Initial kinetic energy of the trucks</h3>
K.E = ¹/₂mv²
K.Ei = ¹/₂(4285)(9.35)² + ¹/₂(5495)(6.35)²
K.Ei = 298,088.78 J
<h3>Final kinetic energy of the trucks</h3>
K.Ef = ¹/₂(m₁ + m₂)v²
K.Ef = ¹/₂(4285 + 5495)(7.66)²
K.Ef = 286,923.68 J
<h3>Change in kinetic energy</h3>
ΔK.E = K.Ef - K.Ei
ΔK.E = 286,923.68 J - 298,088.78 J
ΔK.E = - 11,165.1 J
Learn more about linear momentum here: brainly.com/question/7538238
