#39. rain, snow, sleet and hail.
Answer:
The fire hose be located 59.80 m away to hit the highest possible fire.
Explanation:
Vertical velocity = 25 sin35 = 14.34 m/s
Acceleration = -9.81m/s²
At maximum height , final vertical velocity = 0 m/s
We have v = u + at
Substituting
0 = 14.34 - 9.81 x t
t = 1.46 s
Time of flight of water = 2 x 1.46 = 2.92 s
Horizontal velocity = 25 cos35 = 20.48 m/s
Horizontal displacement = 20.48 x 2.92 = 59.80 m
So, the fire hose be located 59.80 m away to hit the highest possible fire.
By a black hole, the sky looks normal then the stars closer to the black holes look like they are spinning around the black hole.
The appropriate answer is c. silty clay loam. This is the most likely soil that was present in the garden before sand was added to balance it. This type of soil contains an even mix of silt and clay. This type of soil does not drain well and tends to hold water. This would not be suitable for most garden variety plants. Adding sand to the soil ensures better drainage and removes moisture that would rot roots or create conditions for fungi to develop.
I. Positive acceleration increases velocity. Negative acceleration decreases velocity. runner A sped up until the finish line and then slowed to a stop.
ii. Zero a acceleration implies a constant, unchanging velocity not a zero velocity. runner B achieved some velocity prior to 8s and is moving and must slow down to reach a stop.
iii. None. No aspects of this reasoning are correct. Everything she says is wrong. See iv for what/why.
iv. The sign on acceleration denotes the direction of *change in velocity* not change in direction. The sign on velocity can denote change in direction but only “forward” or “reverse” along a particular path. Cardinal direction is not indicated, generally, by the sign on velocity. It may correspond to North/South situationally but it is not an built-in feature of velocity and its sign. For example, if you are traveling with positive velocity and turn left to continue your journey you still have a positive velocity in the new direction. In fact, if you turn left again, traveling in the opposite direction as the one you started with your velocity would still be positive… in the new direction. The velocity relative to original direction could be said to be negative but that would be a confusing way to describe a journey. Maybe if you stopped the vehicle and moved in reverse, you could meaningfully say velocity was negative.
