Answer:
The frictional force producing this deceleration would have a magnitude of 
.
Explanation:
The velocity of this object changed by 
in 
. The acceleration of this object would be:
.
Let 
denote the mass of this object. By Newton's Second Law of Motion, the net force on this object would be:
.
(
.)
If the floor is level, friction would be the only unbalanced force on this object. Thus, the magnitude of the frictional force on this object would also be 
, same as the magnitude of the net force on this object.
The answer is 10,560 Joules or 1.1*10^4
Explanation:
Step 1: Calculate
The equation for Kinetic Energy is
Kinetic energy=.5 times Mass times Velocity²
KE=.5*m*v²
so we plug in our numbers
KE=.5*600*35.2²
This works out to be 10,560 Joules or 1.1*10^4
I can see three different transitions here:
3 --> 1
3 --> 2
followed by
2 --> 1 .
So we should expect to see three different 'colors'
being emitted from this excited mob.
Answer: 107g
Explanation:
Just subtract 125 from 232, like this: 232-125=107g.
Answer:
B. Gravitational force
Explanation:
The gravitational force of an object (also called weight) is given by
where m is the mass of the object and g is the acceleration of gravity, and it always points in the downward direction.
In this problem, the arrow labelled with 4 is the only force pointing downward: therefore, it must be the gravitational force.
The other arrows represent:
1 --> component of the gravitational force parallel to the plane
2 --> force of friction
3 --> component of the gravitational force perpendicular to the plane
