TIMED! URGENT! REALLY APPRECIATE HELP!! TYSM!!!!!!
2 answers:
Answer:
<em>d = 27.03 m</em>
Explanation:
<u>Constant Speed Motion </u>
An object travels at constant speed if the ratio of the distance traveled by the time taken is constant.
Expressed in a simple equation, we have:
Where
v = Speed of the object
d = Distance traveled
t = Time taken to travel d.
From the equation above, we can solve for d:
d = v . t
It's required to find the distance traveled by someone walking at v=1.7 m/s for t=15.9 s. Substituting in the last equation:
d = 1.7 m/s * 15.9 s
d = 27.03 m
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Answer:12.206 cm,
Explanation:
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Now it moves 8 cm left so its final position vector is
so its displacement is given by
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Answer:
No, it is not necessary for them to have same mass.
Explanation:
Let both bodies have a density d1 and d2 respectively.
Since their volumes are equal V1 = V2
we know that,
density =
Hence, d1 = and d2 =
Taking the ratio of densities,we get
This implies that unless the bodies have same densities, the mass of the two bodies will not be same.
Answer:
a) the mass of the second car = 28000 kg
b) the amount of kinetic energy that was lost in the collision =
Explanation:
Given that:
mass of the train car = 6300 kg
speed of the train car = 12.0 m/s
mass of the second moving car = ???
speed of the second moving car = 2.2 m/s
After strike;
they both move with a speed = 4.00 m/s
a)
Using the conservation of momentum :
b)
To determine the amount of kinetic energy that was lost in the collision;
we will need to find the difference between the kinetic energy before the collision and after the collision;
i.e
Now; the kinetic energy that was lost in the collision is calculated as follows: