Quadratic Function Word Problems

The expression -4.9t² + 50t + 2 represents the height, in meters, of a toy rocket t seconds after launch. The initial height of the rocket, in meters, is

• 0

• 2

• 4.9

• 50

A model rocket is launched upward from ground level with an initial velocity of 68.6 m/s.

What would be the maximum height, to the nearest meter, attained by the model?

• 243

• 242

• 241

• 240

The height of a ball Doreen tossed into the air can be modeled by the function h(x) = −4.9x² + 6x + 5, where x is the time elapsed in seconds, and h(x) is the height in meters. The number 5 in the function represents

• the initial height of the ball

• the time at which the ball reaches the ground

• the time at which the ball was at its highest point

• the maximum height the ball attained when thrown in the air

Tags

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.B.4