an arrow is shot horizontally from a height of 4.9m above the ground. the initial speed of the arrow is 45 m/s. neglecting friction: a) how long will it take the arrow to hit the ground? b. how far does the arrow go?

The time taken by the error to hit the ground is 1 second and the arrow goes to a distance of 45 m.The height of the arrow is 4.9 metre above the ground and the initial speed of the arrow is 45m/s.The path of the arrow will be a projectile.a) The time of flight of the arrow to hit the ground is given by,T = √(2H/g)H is the height of the arrow,g is the acceleration due to gravity.Now, putting all the values,T = √(2×4.9/9.8)T = 1 seconds.The arrow will take one second to hit the ground.b) The horizontal range of the projectile for the arrow is given by,R = UTU is the initial speed,T is the time of flight.Putting values,R = 45 × 1R = 45 meters So, the arrows goes till a distance of 45 meters.To know more about horizontal projectile, visit,https://brainly.com/question/24216590#SPJ4