Answer:
0.4 s
Explanation:
The time that the ball is in the air can be found with the next formula:
where 
is the initial velocity of the ball, in this case:
β is the angle: β = 29.0°
And g is the acceleration of gravity: 
Replacing all the values to find t, we have:
Thus, the ball is 0.4s in the air.
Answer:
wouldn't they be dead and there's no oxygen in space....right???
When the continental drift occured, it moved all the land on earth around, therefore changing climates. If fossils of animals are found on a certain continent that doesn't support that species, it proves the drift happened because the climate used to be suitable for them, but now is not.
<span>Depth = 5.0 Ă— 10^2 m
Density of sea water = 1.025 x 10^3
Pd = Po + pgh
Atmospheric pressure is standard Patm = 1.01325 x 10^5 Pa
Since the normal pressure is retained in the hull, no need to bother about Po
Pd = pgh = 1.025 x 10^3 x 9.8 x 5.0 x 10^2 = 50.225 x 10^5
So now Pd / Patm = 50.225 x 10^5 / 1.01325 x 10^5 = 49.56
So it is 49.56 times larger.</span>
For this problem, we use the conservation of momentum as a solution. Since momentum is mass times velocity, then,
m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂'
where
v₁ and v₂ are initial velocities of cart A and B, respectively
v₁' and v₂' are final velocities of cart A and B, respectively
m₁ and m₂ are masses of cart A and B, respectively
(7 kg)(0 m/s) + (3 kg)(0 m/s) = (7 kg)(v₁') + (3 kg)(6 m/s)
Solving for v₁',
v₁' = -2.57 m/s
<em>Therefore, the speed of cart A is at 2.57 m/s at the direction opposite of cart B.</em>
