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☆☆☆☆☆Cards in this guide (13)
A ball is thrown horizontally at 20 ms from the top of a cliff 50 meters high How long does it take the ball to reach the ground
Use the equation [ D = 1/2 g t2 ] .
D = the distance of free-fall = 50 m
g = acceleration of gravity = 9.8 m/sec2
t = time in free-fall
D = 1/2 g t2
2D / g = t2
t = sqrt( 2D / g ) = sqrt( 100 / 9.8 ) = 3.1944 seconds(rounded)
The horizontal velocity that the ball has when it's launched doesn't appear
in the calculation, because it makes absolutely no difference in the result.
Any effects of air resistance have been ignored in arriving at this solution.
What type of measurement A northwesterly wind of 5 miles per hour
vector
It is a meteorological measurement.
Two forces act on the same object One force is pushing due east with a force of 6 newtons and the other is pushing due north at 8 newtons What is the resulting force
10 newtons NE. a little more north than east
A ball is thrown horizontally from a cliff at a speed of 15 ms and strikes the ground 45 meters from the base of the cliff How long was the ball in the air
Answer: 3 seconds
What is the vertical component influenced by
Gravity
A ball is thrown horizontally from a cliff at a speed of 15 ms and strikes the ground 45 meters from the base of the cliff How high was the cliff rounded to the nearest meter
Answer: 44 meters
A plane is flying north at a speed of 200 miles per hour The wind is blowing at a constant speed of 40 miles per hour from the east What is the resulting speed of the plane calculated to the nearest
204 mph
In what type of orbits do planets move around the sun
elliptical
A football is thrown horizontally off the top of an apartment house that is 78.4 meters high the ball is thrown at a speed of 15 ms how far will the ball travel before hitting the streets below
"60" or "sixty"
What type of measurement is the air pressure inside a tire
SCALAR
A player kicks a soccer ball from ground level and sends it flying at an angle of 30 degrees at a speed of 26 ms
Yes your question is.......................
What term is given to the net figure that results from vector
resultant
What type of measurement is thisthe distance from point A to point B on a grid
Length.
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