A jet starts from rest and accelerates to a speed of 100 m/s in 10 seconds before taking off. how far does it travel before taki
2 answers:
Answer:
Explanation:
We want to find the distance the jet travels. Distance can be found by multiplying the speed by the time.
The speed is 100 meters per second.
The time is 10 seconds.
Substitute the values into the formula.
Multiply. Note that the seconds, or "s" will cancel each other out.
The jet travels <u>1,000 meters</u> before taking off.
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One of the equations of gravity is this:
Where v = final velocity which is 7m/s
u = initial velocity which is 0 for objects falling from a height
g = acceleration due to gravity and it is approximately 10m/s^2. It's a constant so pretty much remember this number. It's positive since the work being done is caused by gravity (in other words, it's falling down). It can also be negative if the work being down is against gravity (in other words, it's going up)
h = height of object
Substitute for the values and you should have something like this
Where v = final velocity which is 7m/s
u = initial velocity which is 0 for objects falling from a height
g = acceleration due to gravity and it is approximately 10m/s^2. It's a constant so pretty much remember this number. It's positive since the work being done is caused by gravity (in other words, it's falling down). It can also be negative if the work being down is against gravity (in other words, it's going up)
h = height of object
Substitute for the values and you should have something like this