Question

Кузнечный молот падает на наковальню со скоростью 8 м/с и тормозит на ней в течение 2 с. каково среднее ускорение молота в момент удара? помогите,очень надо

Answer 1

V=v0-at
0=8-2a
a=8\2
a=4 м/c^2

Answer 2

Calculation of Average Acceleration

To calculate the average acceleration of the hammer during impact, we need to use the formula:

Average Acceleration = Change in Velocity / Time Taken

Given: - Initial velocity (u) = 8 m/s - Final velocity (v) = 0 m/s (as the hammer comes to a stop) - Time taken (t) = 2 s

We can calculate the change in velocity (Δv) using the formula:

Change in Velocity (Δv) = Final Velocity (v) - Initial Velocity (u)

Substituting the given values:

Δv = 0 m/s - 8 m/s = -8 m/s

Now, we can substitute the values of Δv and t into the formula for average acceleration:

Average Acceleration = Δv / t

Average Acceleration = -8 m/s / 2 s = -4 m/s²

Therefore, the average acceleration of the hammer during impact is -4 m/s².

Please note that the negative sign indicates that the acceleration is in the opposite direction of the initial velocity.