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 hypotenuse = 13.78 cm
Ф = 27.44°
θ = 62.56°
explanation:
When the surface of the comb rubs on your hair, the comb is electrically charged. When the comb comes close to the paper, the charge on the comb causes charge separation on the paper bits. Since paper is neutral, positive and negative charges are equivalent. The charge on the comb charges the area of the bit of paper nearest the comb to the opposite. Thus, the bits of paper become attracted to the comb.
