Scientific inquiry may be defined as the process that follows the step of a question hypothesis, investigation, gathering evidence and communicating the results. it is commonly based on empirical or measurable evidence subject to specific principles of reasoning. it involves investing a given subject in a logical way to find evidence that supports the answer.
Answer:
The velocity of the system's center of mass does not change, as long as the system is closed. The system moves as if all the mass is concentrated at a single point.
Answer:
e
Explanation:
the field points to the right
The eagle momentum : 320 kg.m/s
<h3>Further explanation</h3>
Given
mass = 32 kg
d = 100 m
t = 10 s
Required
The momentum
Solution
The velocity of the eagle :
The momentum (P) :
Solution :
Given :
mass of the plank, m = 14 kg
length of the plank, l = 1.9 m
Distance between and the end at which is acting, = 0.49 m
Torque exerted by the weight of the plank is given by :
= -130 Nm
The torque exerted by is
= 0
Torque exerted by is
Since the system is in equilibrium, the zero rotational acceleration occurs when the net external torque on the system is zero, i.e.
Therefore, we get
= 265 N (approx)
We know that zero linear acceleration occurs when the net external force is zero on the system to achieve equilibrium, i.e.
= 265 - (14 x 9.8)
= 128 N (approx)