I need the answer to these problems please help SolutionVoy

I need the answer to these problems , please help !!

Solution

V_oy = - V₀ cos 46

y₀ = 750 m, t = 7.00 s, a_y = -9.80 m/s²

y - y0 = V_oy t + 1/2 a_y a_t²

0 = 750 - V₀ cos 46 (7.00) - 4.9 * 7²

V₀ = 4.9 * 7² - 750 / -cos 46 (7.00)

= 104.8 m

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V_0x = 104.8 * sin 46 = 75.35 m/s

x = V_0x * t = 75.35 * 7 = 527.46 m

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V_x = V_0x = 75.35 m/s

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V_y = V_0y + a_y t

= -104.8 * cos 46 + (-9.8 * 7)

= 141 m/s