How many meters do you cover in a 10 km (10-K) race?
1 answer:
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Given,
The mass of the train, m=40000 kg
The initial velocity of the train, u=0.700 m/s
The compression in the spring bumper that stopped the train, x=0.250 m
The final velocity of the train, v=0 m/s
From the equation of motion,
Where a is the acceleration of the train.
On substituting the known values,
The magnitude of the force applied by the train will be equal to the magnitude of the restoring force of the spring.
Therefore,
Where k is the spring constant of the spring.
On substituting the known values,
Therefore the spring constant of the spring is 156800 N/m
Thus the correct answer is option C.
Answer:
<h2>7 m/s²</h2>Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
f is the force
m is the mass
From the question we have
We have the final answer as
<h3>7 m/s²</h3>Hope this helps you
Vector is perpendicular to x axis or i component.
Hence i component is 0
j component is 63.5