The final speed is 3 m/s
Explanation:
We can solve this problem by using the law of conservation of momentum. In fact, in absence of external forces, the total momentum of the two spaceships must be conserved. So we can write:
where
is the mass of each spaceship
is the initial velocity of spaceship 1
is the initial velocity of spaceship 2
v is the combined velocity of the two spaceships after the collision
Solving for v, we find
So, their final speed is 3 m/s.
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Answer:
Explanation:
Here we have an inelastic collision problem. We can use the momentum (p = mv) conservation law in each component of the displacement.
So,
<u>X-component:</u>
(1)
Now,
- v(i1x) is 0, because the first car just moving in y-direction
- v(i2x) is 164 km/h
- v(f1x)=v(f2x), because both cars stick together after the collision, so they have the same x-component velocity.
Then, using this information we can rewrite the equation (1).
<u>Y-component:</u>
(2)
We can do the same but with the next conditions:
- v(i1y) is 239.44 km/h
- v(i2y) is 0, because the second car just moving at the x-direction
- v(f1y)=v(f2y), because both cars stick together after the collision, so they have the same y-component velocity.
Then, using this information we can rewrite the equation (2).
Now, as we have both components of the final velocity, we can find the angle East of North. Using trigonometric functions, we have:
I hope it helps you!
Answer:4.93 m/s
Explanation:
Given
height to reach is (h )1.24 m
here Let initial velocity is u
using equation of motion
here Final Velocity v=0
a=acceleration due to gravity
u=4.93 m/s
Answer:
A) a scientific theory or principle
Explanation:
A Theory or principle has to explain different observations for a specific phenomenon. Theories are tested in base of new data to see if they can fit with all the new variations. They gain more acceptance in the scientific world if they predict in a correct way the result of many observations.
For example the uncertainty principle which state that the position and the momentum of a particle can not be known at the same time. Many experiments that aim to test the Uncertainty principle demonstrated this property, but tests are currently being done with other variations to see if the principle still fits with them.