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Algebra
Pregunta

A baseball player hits a baseball and its height ...

 A baseball player hits a baseball and its height is given by the equation \( y = - 4.9 t ^ { 2 } + 150 , \) where \( h \) is the height in metres above the ground, and \( t \) , in seconds, is its time in the  air.  a) What was the initial height? [1 mark]  b) What is the height of the ball after \( 2 s \) ? Round to the nearest tenth. [2 marks]  c) Was the ball in the air after \( 2 \) seconds? Explain. Communication[1]  d) How much the ball has fallen in the first \( 2 \) seconds? [1 mark]  e) When will the ball hit the ground? Round to the nearest second. [2 marks] 

Answer

a) height = 150metres

b) height = 130.4metres

c) yes

d) ball fallen = 19.6 metres

e) t = 5.53 seconds

Solución
View full explanation on CameraMath App.