math problem help

Question

A model rocket is launched with an initial upward velocity of 235/fts

. The rocket's height h

 (in feet) after t

 seconds is given by the following.

h=−235t-16t^2

Find all values of t

 for which the rocket's height is 151

 feet.

Answer 1

Hi Danielle, from the information given, there is no solutions. To find the time t when the rocket reaches 151 feet, you need to solve the equation, 151 = -235t - 16t².

Using the quadratic formula the results are approximately, -14.01 and -0.67. This would imply the rocket traveled underground.

Is something missing from the question?

Don L.