Jump to... Print a Calculator Periodic Table uestion 2 of 21 Map Sapling Learnin

Question

Jump to... Print a Calculator Periodic Table uestion 2 of 21 Map Sapling Learning You stand 17.5 m from a wall holding a tennis ball. You throw the tennis ball at the wall at an angle of 20.5 from the ground with an initial speed of 21.5 m/s. At what height above its initial position does the tennis ball hit the wall? In your calculations, neglect any effects of air resistance. Number 4.69 There is a hint available! View the botiorm dwider bar Click on the divider bar again to hide the hint OPmius Give up & View Solution @Check Answer 0 Next Ent

Explanation / Answer

Here .

x = 17.5 m

u = 21.5 m/s

theta = 20.5 degree

let the final height is y

y = x * tan(theta) - g * x^2/(2 * (u * cos(theta))^2)

y = 17.5 * tan(20.5 degree) - 9.8 * 17.5^2/(2 * (21.5 * cos(20.5 degree))^2)

solving for y

y = 2.843 m

the height at which the ball strikes is 2.83 m

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