Mathematics, 24.05.2021 22:10 iiheartshay

Steve kicks a football into the air. The path that the ball takes can be described by the equation h=20t-5t² where h is the height of the ball in meters and t is time in seconds. Answer the following questions:

1. how high is the ball after 3 seconds?

2. After how many seconds will the ball be 15 meters high?

3. After how many seconds will the ball be 25 meters high?

4. when will the ball hit the ground?

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