Electric vehicle have to achieve the same amount of momentum as the rocky is 41.78 m/s.
We are given that,
Mass of mountain = M = 61000kg
velocity = V = 0.5m/s
As momentum is defined as the sum of an object's mass and velocity, it is represented as p=mv, where p stands for momentum, m for mass, and v for velocity.
According to the law of conservation of linear momentum, the starting and final momentum should add up to the same amount. As a result, in this instance, MV=mu, where M and m represent the masses of 61 000 kg and 730 kg, respectively, while v and u are the velocities of the masses.
u = MV/m
Putting the values from the above we get,
u = (61000kg)(0.5m/s)/730kg
u = 41.78 m/s
Therefore, Electric vehicle have to achieve the same amount of momentum as the rocky would be 41.78 m/s.
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