Answer:
12.76 m.
Explanation:
From the question given above, the following data were obtained:
Initial velocity (u) = 11.9 m/s
Angle of projection (θ) = 59°
Acceleration due to gravity (g) = 9.8 m/s²
Horizontal distance (i.e Range) (R) =?
The horizontal distance other wise known as range from the base of the building to which the rock will strike the ground can be obtained as follow:
R = u²Sine2θ / g
R = 11.9² × Sine (2×59) / 9.8
R = 141.61 × Sine 118 / 9.8
R = 12.76 m
Therefore, the horizontal distance from the base of the building to which the rock will strike the ground is 12.76 m
Answer:
Since this is old, hope you don't mind if I scoop up these points
Explanation:
Answer:
v = 27.456 m/s
Explanation:
The support pressure needed of the water in the straw can be calculated by the formula
Given that,
P = r*g*h
= 1000*9.8*0.05 Pa.= 490 Pa
This pressure is compensated by 0.5*r*v^2 of the air,
Hence,
0.5*1.3*v^2 = 490
velocity of air blown into the straw =
v = 27.456 m/s
-di represents an image in front of a lens
