Answer:
The dimension of mass can be represented as:
Explanation:
We have Force = Mass X Acceleration
= Mass X
or, Mass = Force x
So, dimensions of mass =
=
Answer:
a) u = 6 m/s
b) a = 4 m/s²
c) d(3) = 16 m
Explanation:
equation for the first second
distance will be the average velocity times the time of travel
8 = ½(u + (u + at))t t is one second, so reduces to
8 = u + ½a
velocity at the end of the first second is
v = u + at = u + a
position equation for the second period is
12 = ½((u + a) + (u + a + at))t t is one second so reduces to
12 = u + 3a/2
subtracting the first position equation from the second
12 - 8 = u + 3a/2 - (u + ½a)
a = 4 m/s²
8 = u + ½4
u = 6 m/s
in the third second
d = 6(3) + ½(4)(3²) - 8 - 12
d = 16 m
To solve this we are going to use the formula for work:
where
is the work done
is the force
is the distance
Scenario A. We know for our problem that
and
. Lets replace those values in our formula to find
:
Scenario B. We know for our problem that
and
. Lest replace those value in our formula:
Scenario C. We know for our problem that
and
. Lets replace the values in our formula:
We can conclude that:
- The scenario that requires the most work is
C.
- The scenario that requires the least work is
A.
Tip did you know sound is faster that the speed of lite,
the anser is being shot by something