Question

A ball is thrown at an angle of 40 degrees to the horizontal. With what initial speed should the ball be thrown in order to land 100 ft away? Neglect air resistance.​

Answer 1

Answer:

Explanation: Most people know that a ball without air resistance (traditional projectile motion) goes the farthest if you throw it at a 45 degree angle.

Answer 2

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ANSWER

Given  :  ux=u=40m/s                T=3s

x direction :       ax=0                ⟹Vx=ux=40  m/s

y direction :         uy=0              ay=g=10m/s2

Using        Vy=uy+ayT

∴    Vy=0+10×3=30  m/s

∴ Speed of the ball         V=Vx2+Vy2=