3 years ago

Which of the following could be cause of a irregular systolic reading

Physics

1 answer:

Paul [167]3 years ago

3 0

Maybe number 4 could help.

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A tennis ball is hit at an angle of 20° to the horizontal with the velocity of 20 m/s. What is its velocity in the Y direction?

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3 years ago

The lift does 3000 J of work in 5 seconds. What is the power of the lift?

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3 years ago

A ball is dropped from rest from a height h above the ground. another ball is thrown vertically upwards from the ground at the i

Darya [45]

The position of the first ball is

$y_1=h-\dfrac g2t^2$

while the position of the second ball, thrown with initial velocity $v$ , is

$y_2=vt-\dfrac g2t^2$

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$\dfrac h2=h-\dfrac g2t^2$

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We want the second ball to reach the same height at the same time, so that

$\dfrac h2=v\sqrt{\dfrac hg}-\dfrac g2\left(\sqrt{\dfrac hg}\right)^2$

$\implies h=2v\sqrt{\dfrac hg}-g\left(\dfrac hg\right)$

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3 years ago

Type your answer...

ArbitrLikvidat [17]

Answer:

50.4÷1.18= 42.7m/s as speed is equal to the distance over the time taken

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2 years ago