Question

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relative tu u TULKOL 15 JU ITIS ", and the mass of the rocket is 2 kg what is the initial acceleration of
the rocket?
[HSEB 2057]
hall A of mass 0.1 kg moving with a velocity of 6 ms-1 collides directly with a ban
kg at rest. Calculate their common velocity if both balls move off together. If A had rebound
a velocity of 2 ms" in the opposite direction after collision, what would be the new velochy
[HSEB 2058]
18. A bullet of mass 20 g is fired horizontally into a suspended stationary wooden block of mass 3008
with a velocity of 200 ms. What is the common velocity of the bullet and block if the bullet is
embedded (stays inside) the block? If the block and bullet experience a constant opposing force of
2 N, find the time taken by them to come to rest.
19. A hose directs a horizontal jet of water moving with a velocity of 20 msl on to a vertical wall. The
cross-sectional area of the jet is 5 x 104 m2. If the density of water is 1000 kg m-3, calculate the
force on the wall assuming the water is brought to rest there.
20. In a nuclear collision, an alpha-particle A of mass 4 units is incident with a
velocity v on a stationary helium nucleus B of mass 4 units as shown in
figure. After collision, A moves in the direction BC with a velocity v/2,
whereas BC makes an angle of 60° with the initial direction AB, and the A B 009
Helium nucleus moves along BD.
Calculate the velocity of rebound of the helium nucleus along BD and the
angle made with the direction AB.
21. Rain falls vertically onto a plane roof 1.5 m square, which is inclined to the horizontal at an angle of
The mindrops strike the roof with a vertical velocity of 3 ms and a volume of 2.5 x 10-2 m
. Arouming that the conditions are steady and th:​

Answer 1

Answer:

Explanation:

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