Please solve it ,,,,,,,,,,................................
fredd [130]
Answer:
the distance covered by the body in 5th second =u+a(n- 1/2)=7+4(5- 1/2)
=7+4×9/2
=7+18
=25m
Answer:
(D) 3
Explanation:
The angular momentum is given by:
Thus, the magnitude of the angular momenta of both solar systems are given by:
where we have taken that both systems has the same radius.
By taking into account that T1=3T2, we have
but L1=L2=L:
Hence, the answer is (D) 3
HOPE THIS HELPS!!
V=r/t
Speed equals displacement over the time
V=100/9.92=10.08ms^-1
<span>Since there is no friction, conservation of energy gives change in energy is zero
Change in energy = 0
Change in KE + Change in PE = 0
1/2 x m x (vf^2 - vi^2) + m x g x (hf-hi) = 0
1/2 x (vf^2 - vi^2) + g x (hf-hi) = 0
(vf^2 - vi^2) = 2 x g x (hi - hf)
Since it starts from rest vi = 0
Vf = squareroot of (2 x g x (hi - hf))
For h1, no hf
Vf = squareroot of (2 x g x (hi - hf))
Vf = squareroot of (2 x 9.81 x 30)
Vf = squareroot of 588.6
Vf = 24.26
For h2
Vf = squareroot of (2 x 9.81 x (30 – 12))
Vf = squareroot of (9.81 x 36)
Vf = squareroot of 353.16
Vf = 18.79
For h3
Vf = squareroot of (2 x 9.81 x (30 – 20))
Vf = squareroot of (20 x 9.81)
Vf = 18.79</span>
Answer:
4 is the best option for it as there are some stuff in grade to ye
