Answer:
Resultant vector.
Explanation:
Let us consider the two vector which are u and v. The subtraction or addition of the two vectors will give the resultant of these two vectors.
The resultant will be in case of subtraction is,
And in the case of addition
And this resultant can be done by the help of vector law of addition by the parallelogram method or triangle law of addition.
Answer:
(a) A = m/s^3, B = m/s.
(b) dx/dt = m/s.
Explanation:
(a)
Therefore, the dimension of A is m/s^3, and of B is m/s in order to satisfy the above equation.
(b)
This makes sense, because the position function has a unit of 'm'. The derivative of the position function is velocity, and its unit is m/s.
In order to draw the free body diagram, first let's calculate the friction force acting on the crate:
Since the friction force is greater than the force applied, the crate will not move, and the friction force will be equal to the force applied.
The weight force is equal to 40 * 9.8 = 392 N.
So, drawing the diagram, we have:
