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LIEDUMICIS.ISLIULIULUI marks 4 1 point → An archer shoots an arrow into the air. The equation that describes the path of the arrow height in meters and t is the time in seconds. At what time does the arrow hit the ground Type your answer... d 5 1 point 1 According to Newton's 2nd law Force equals mass times acceleration. Given Newton's 2r kilograms, of an object that strikes the ground with a force of 185 newtons using an accel second. Round to 2 decimal places, . ar 2. Type your answer. 3 6 4 1 point Ashton, Anywhere had a population of 294876 in 2007. The population is increasing at a y

Sagot :

4)

the arrow touches the ground when the heigth is 0

so we need to replace h=0 and solve for t

[tex]\begin{gathered} h=17t-5t^2 \\ 0=17t-5t^2 \\ 0=t(17-5t) \\ 0=17-5t \\ 5t=17 \\ t=\frac{17}{5}=3.4 \end{gathered}[/tex]

the arrow tuches the ground at 3.4 seconds

5)

[tex]F=m\times a[/tex]

replacing

[tex]185=m\times13.7[/tex]

solve for m

[tex]\begin{gathered} m=\frac{185}{13.7} \\ \\ m=13.50 \end{gathered}[/tex]

the mass is 13.50Kg

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