Answer:
= - M / m v
Explanation:
We must define a system formed by the wagon and the torro, in this case the forces of the movement are internal, so the moment is preserved, write the moment in two moments
Initial. Before the bull's movement, in this case the two are still
p₀ = 0
Final. The bull is moving
= M v + m
p₀ =
0 = M v + m
We cleared the train speed
= - M / m v
The negative sign indicates that the train moves in the opposite direction of the bull
Answer:
Explanation:
The cross product of two vectors is given by
Where, θ be the angle between the two vectors and \widehat{n} be the unit vector along the direction of cross product of two vectors.
Here, K x i = - j
As K is the unit vector along Z axis, i is the unit vector along X axis and j be the unit vector along axis.
The direction of cross product of two vectors is given by the right hand palm rule.
So, k x i = j
j x i = - k
- j x k = - i
i x i = 0