In a stunt filmed for a movie, a truck rolls down an incline and off a vertical cliff, falling into a river below. The truck starts from rest and rolls down the incline, which makes an angle of 23.0° below the horizontal, with a constant acceleration of 3.67 m/s2. After rolling down the incline a distance of 30.0 m, it reaches the edge of the cliff, which is 20.0 m above the river. (a) How much time (in s) does it take the truck to fall from the edge of the cliff to the landing point? (b) At the point where the truck lands in the river, how far is it horizontally from the edge of the cliff (in m)?

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Projectile Motion