Answer: The mass of the object will be 11250 kg.
Explanation:
Density is defined as the mass contained per unit volume.
Given :
Density of the object= 
Mass of object = ?
Volume of the object = 
Putting in the values we get:
Thus the mass of the object is 11250 kg.
Answer:
The focus of Lesson 1 is Newton's first law of motion - sometimes referred to as the law of inertia. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
The 175 N force is in the path A to B since a stick can’t pull the doorknob, this can be written as:
(F ) ⃗= 175⋅(73i ⃗+990 j ⃗+494 k ⃗)/(√73² +990²+ 494²
)
(F ) ⃗=(11.5i ⃗+156 j ⃗+78.0k ⃗ )N
The displacement form C to B is:
(r ⃗ )_(B/C)=(683 i ⃗+860 j ⃗+0k ⃗ )mm
The formula for the moment about C is
M ⃗_c= (r ⃗ )_(B/C) x (F ) ⃗
M ⃗_c= (683 i ⃗+860 j ⃗ ) x (683 i ⃗+860 j ⃗+0k ⃗ )mm.N
M ⃗_c= (67.1 i ⃗+53.3 j ⃗+116 k ⃗ )m.N
Answer:
n physics, the kinetic energy (KE) of an object is the energy that it possesses due to its motion.[1] It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.
In classical mechanics, the kinetic energy of a non-rotating object of mass m traveling at a speed v is {\displaystyle {\begin{smallmatrix}{\frac {1}{2}}mv^{2}\end{smallmatrix}}}{\begin{smallmatrix}{\frac {1}{2}}mv^{2}\end{smallmatrix}}. In relativistic mechanics, this is a good approximation only when v is much less than the speed of light.
The standard unit of kinetic energy is the joule, while the imperial unit of kinetic energy is the foot-pound.
Explanation:
Well, there's a lot of friction going on there, so the snowball gradually
loses kinetic energy just from bouncing and plowing through the snow
on the ground.
But I don't think you're asking about that. I think you're ignoring that
for the moment, and asking how its kinetic energy changes as its
mass increases. We know that
Kinetic Energy = (1/2) (mass) (speed²)
and THAT seems to say that more mass means more kinetic energy.
So maybe the snowball's kinetic energy increases as it picks up
more mass.
Don't you believe it !
Remember: Energy always has to come from somewhere ... a motor,
a jet, a push, gravity ... something ! It doesn't just appear out of thin air.
If the snowball were rolling down hill, then it could get more kinetic energy
from gravity. But if it's rolling on level ground, then it can never have any
more kinetic energy than you gave it when you pushed it and let it go.
If snow or leaves stick to it and its mass increases, then its speed must
decrease, in order to keep the same kinetic energy.
