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NayNay1105
06.11.2020 •
Mathematics
Plz help it is already late
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Ответ:
Ответ:
pretty sure its b
Step-by-step explanation:
Ответ:
-4.9(100)+98(10)=490 m as the highest point of the projectile
Then, when it hits the ground, h(t)=0, so
0=-4.9t²+98t
98t=4.9t²
4.9t=98
t=20
☺☺☺☺