Hmmmm... because the force applied by each girl isn't great enough to overcome the force of friction acting on each boulder? (I expect this to be incorrect since friction isn't mentioned in he question at all, it's just the first thing that come to mind!)haruspex said:
We are not told which way they are pushing, but suppose it is horizontal. Neither are we told whether the boulders are simply lying on flat ground, but suppose they are. If there is no opposing horizontal force then the boulders must move. What could the opposing force be?x2017 said:
The formula for resultant impulse is ΣFΔt = mΔv, where ΣF is the sum of all forces acting on an object, Δt is the time interval, m is the mass of the object, and Δv is the change in velocity.
Resultant impulse relates to the change in momentum of an object. It describes the amount of force that is applied over a specific time interval and how it affects the object's velocity.
Newtons's second law of motion states that the force applied to an object is equal to the object's mass multiplied by its acceleration. Resultant impulse is a way to calculate this force by considering the time interval and the change in velocity.
Resultant impulse is used in many fields, such as sports, engineering, and physics. In sports, it can be used to analyze the force and impact of collisions, while in engineering, it is used in designing safety features for vehicles. In physics, it helps to understand the effects of forces on objects and their motion.
To calculate resultant impulse, you need to know the sum of the forces acting on an object, the time interval, and the change in velocity. Simply plug these values into the formula ΣFΔt = mΔv and solve for the resultant impulse. Make sure to use consistent units for all the variables.