(1 point) A projectile is launched horizontally at 45 m/s from a tall building. If the projectile falls for 4 seconds, what is the magnitude of the resultant velocity the projectile hits the ground with?

1) A golfer hits his approach shot at an angle of θ = 51.5°,giving the ball an initial speed of v0 = 38.3 m/s The ball lands on the elevated green, yf = 5.9 mabove the initial position near the hole, and stops immediately. (a) How much time passed while the ball was in the air? (b) How far did the ball travel horizontally before landing?m (c) What was the peak height reached by the ball?m   2)A ball starts from rest at the left end of the track shown in the figure below. The ball flies off the right end of the track and follows the parabolic trajectory shown. Suppose the right end of the track is 1.2 mabove the floor and makes an angle of 35.0°with the horizontal. Also suppose the ball leaves the track with a speed of 3.8 m/s.Determine where the ball hits the floor.m=

A boy wishes to throw a ball over a flat roofed school house that stands 12 m wide and 7.5 m high on level ground. Assuming that the ball will leave his hand at a height of 5 m above the ground,determine how far from the wall he should take his hand in order to make the ball clear the roof with least effort, that is, with minimum velocity.

A projectile is launched at an angle of 30° and lands 20 s later at the same height as it was launched. (a) What is the initial speed of the projectile?

William Tell must split the apple atop his son's head from a distance of 21 mm . When William aims directly at the apple, the arrow is horizontal. At what angle must he aim it to hit the apple if the arrow travels at a speed of 38 m/sm/s ?

When a projectile is fired with a velocity of 815 m/s at angle of 37 degrees above the horizontal, the maximum height reached by the projectile is about?

A catfish is spotted at the bottom of a creek. The depth of the water is 2 m. A hunter (with no knowledge ofoptics) fires a rifle shot, directly aimed at the catfish. The bullet strikes the water at an angle of 40° to the water. Assumethat the bullet is not deflected by the air/water interface, what is the distance from the bullet hole at the bottom of the creekto the catfish?A) 0.88 mB) 0.97 mC) 0.49 mD) 0.56 mE) 0.73 m

Aprojictile is fired at an angle of 30 from the horizontal with some initial speed.if the initial speed of the second projectile is twice that of the first projictile,firing at what other projectiles angle results in the same range.neglect air resistance.

William Tell must split the apple atop his son's head from a distance of 30 mm . When William aims directly at the apple, the arrow is horizontal.   At what angle must he aim it to hit the apple if the arrow travels at a speed of 35 m/sm/s ? Express your answer using two significant figures.