Answer:
10.25m/s is the speed of helicopter.
Step-by-step explanation:
speed =d/t
=24600/2400
=10.25m/s
The arrival time in london of a train that leaves Leicester to london at 11:50 A.M is 13:05 pm.
To calculate the arrival time in london of a train that leaves Leicester to london at 11:50 A.M, use use the formula below.
Formula:
- Ta = [(d/s)+11:50]....... Equation 1
Where:
- Ta = Arrival time
- d = distance from Leicester to London
- s = Speed
From the question,
Given:
Substitute these values into equation 1
- Ta = [(100/80)+11:50]
- Ta = 1.25h+11:50
- Ta = 1 hours 15 minutes +11:50
- Ta = 13:05 pm
Hence, the arrival time in london of a train that leaves Leicester to london at 11:50 A.M is 13:05 pm.
Learn more about time here: brainly.com/question/4931057
Distance from the building where the fireman is standing = 25 m due yo the west pointed angle of elevation of the ladder = 51 degrees You then aquire the length of the ladder equals...
x ThenCos 51 degree = 25/x0.6293
= 25/xx = 25/0.6293 = 39.72 meters≈40 meters from the above deduction, so the correct answer is D, because it is the closest, and that it is correct.
I^2 = (sqrt-1)^2 then the square cancels out so the answer is just
-1
Answer:
Height after 5 seconds is <em>215 ft</em>
Step-by-step explanation:
Given that:
The initial velocity of object which is projected upwards is 123 ft/sec.
Height of the object, <em>h</em> after time <em>t </em> in seconds, is given as:
Here, <em>t </em>will always be positive, so 
and 
will also be positive.
But coefficient of is negative, that means something is subtracted from the positive term .
To find:
Height of object after 5 seconds.
Solution:
Given that 
seconds.
Let us put the value in the given relation of 
and 
:
So, height after 5 seconds is <em>215 ft</em>.
