Answer:
Time period for first satellites 24.46 days and for second satellites 37.67 days
Explanation:
Given :
Distance of first satellites 
m
Distance of second satellites 
m
Distance of charon 
m
Time period of charon 
days
From the kepler's third law,
Square of the time period is proportional to the cube of the semi major axis.
For first satellites,
days
For second satellites,
days
Therefore, time period for first satellites = 24.46 days and for second satellites 37.67 days
Answer:
Explanation:
Given data
velocity v₀=20 cm/s at time t=3s
velocity vf=0 at time t=8 s
To find
Average Acceleration at time=3s to 8s
Solution
As we know that acceleration is first derivative of velocity with respect to time
Answer:
Explanation:
h = ut - 16 t² = ut - 1/2 x32 t² = ut - 1/2 g t² , g = acceleration = - 32 ft / s²
1) v² = u² - 2 g h , v = 0 so
h = u² / 2g = 1500² / 2 x 32 = 35156.25 ft
2) v = u - gt
t = u / g = 1500 / 32 = 46.875 s
3) It will hit the ground after 2 x 46.875 = 93.75 s
4 ) time to reach 30000 ft height t is given by
h = ut - 16 t²
30000 = 1500t - 16t²
16t²-1500t + 30000 = 0
t = 28.92 s and 64.82 s
Time required to travel 50000 by plane
= 50000/880 = 56.82 . There is no match of timing so plane will not hit it.
Answer:
The body's rotational inertia is greater in layout position than in tucked position. Because the body remains airborne for roughly the same time interval in either position, the gymnast must have much greater kinetic energy in layout position to complete the backflip.
Explanation:
A gymnast's backflip is considered more difficult to do in the layout (straight body) position than in the tucked position.
When the body is straight , its moment of rotational inertia is more than the case when he folds his body round. Hence rotational inertia ( moment of inertia x angular velocity ) is also greater. To achieve that inertia , there is need of greater imput of energy in the form of kinetic energy which requires greater effort.
So a gymnast's backflip is considered more difficult to do in the layout (straight body) position than in the tucked position.
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