The sun provides a handy benchmark for describing other stars. The mass of this solar system's sun gives us a unit for measuring other stars' masses.
The hailstone will hit the earth in 4.04 seconds.
we move 9.8 meters per second faster thanks to gravity. we start to fall after one second at 9.8 m/s. we start falling at 19.6 m/s after two seconds, and so forth.
From the query, the following information may be deduced:
Height (H) = 120 m
Gravitational acceleration (g)=9.8 m/s2.
Time (t)=?
It is possible to determine the hailstone's impact time as:
h=1/2 gt²
120= 1/2 x 9.8 x t²
120x2/9.8=t²
t²=24.48
t=4.94 s
therefore, the calculated time taken is 4.94 s.
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Answer:
The work done by the hoop is equal to 5.529 Joules.
Explanation:
Given that,
Mass of the hoop, m = 96 kg
The speed of the center of mass, v = 0.24 m/s
To find,
The work done by the hoop.
Solution,
The initial energy of the hoop is given by the sum of linear kinetic energy and the rotational kinetic energy. So,
I is the moment of inertia, 
Since, 
Finally it stops, so the final energy of the hoop will be, 
The work done by the hoop is equal to the change in kinetic energy as :
W = -5.529 Joules
So, the work done by the hoop is equal to 5.529 Joules. Therefore, this is the required solution.
- Kinetic Energy of an object is the measure of the work an object can do by virtue of its motions..
- Where KE is the kinetic energy, m is the body’s mass, and v is the body’s velocity.
- Potential energy is the stored energy in any object or system by virtue of its position or arrangement of parts..
Where,
. m is the mass in kilograms
. g is the acceleration due to gravity
. h is the height in meters
Hope it helpz~ uh..
