If the change in position dx is related to velocity v (with units of m/s) in the equation dx=av, the constant a has which dimension ?

seconds

Explanation:

We have the following equation:

Where has unit of meters () and has units of meters per second ().

If we input these units in the equation, we will have:

Clearing :

Hence is related to time, and its unit in this case is second.

c. newton's third law of motion

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards