Answer:
Explanation:
(a) The applied force has two components Fx and Fy. The Fx component is the only one that does work
(b) There in no net force in the vertical component
(c)
(d)
I attached an scheme of the force diagram
An object travels 7.5 m/s toward the west . Under the influence of a constant net force of 5.2 kN, it comes to rest in 3.2 s. Wh
1 answer:
Answer:
m = 2218.67 kg
Explanation:
It is given that,
Initial velocity, u = 7.5 m/s
Final speed of an object, v = 0 (at rest)
Force, F = 5.2 kN
Time, t = 3.2 s
We need to find the mass of the object. Force acting on an object is given by :
F = ma
m is mass, a is acceleration
So, the mass of the object is 2218.67 kg
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Explanation:
First, we will calculate the electric potential energy of two charges at a distance R as follows.
R = 2r
=
= 0.2 m
where, R = separation between center's of both Q's. Hence, the potential energy will be calculated as follows.
U =
=
= 0.081 J
As, both the charges are coming towards each other with the same energy so there will occur equal sharing of electric potential energy between these two charges.
Therefore, when these charges touch each other then they used to posses maximum kinetic energy, that is, .
Hence, K.E =
=
= 0.0405 J
Now, we will calculate the speed of balls as follows.
V =
=
= 0.142 m/s
Therefore, we can conclude that final speed of one of the balls is 0.142 m/s.