Answer:
B. 34.78 m/s
Explanation:
The momentum of an object is given by:
where
p is the momentum
m is the mass of the object
v is its velocity
For the object in this problem, we have
p = 4000 kg m/s
m = 115 kg
So, we can solve the equation to find v, the velocity:
that would be given by
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@ representing coefficient of kinetic friction.
thus 19.5/51.7 = 0.377
Answer:
Explanation:
From the information given:
The avg. velocity post the window is;
= velocity located at the top of the window
= velocity situated at the bottom of the window
Using the equation of kinematics:
Hence,
To determine the average velocity as follows:
where;
= velocity gained when fallen through the height h.
Similarly, using the equation of kinematics, we have;
Thus, the velocity at the ground is;
Answer:
<h2>A. 80 m/s </h2>
Explanation:
The velocity of the spacecraft can be found by using the formula
p is the momentum
m is the mass
From the question we have
We have the final answer as
<h3>80 m/s</h3>
Hope this helps you
<span>Throwing the bowling ball would have the greatest negative velocity becasue Principle of the Conservation of Momentum states that: if objects collide, the total momentum before the collision is the same as the total momentum after the collision (provided that no external forces - for example, friction - act on the system). That’s amazingly useful because it means that you can tell what is going to happen after a collision before it has taken place. Principle of Conservation of Energy: Of course, energy is also conserved in any collision, but it isn't always conserved in the form of kinetic energy.</span>