A Projectile Is Projected from the Origin with a Velocity

question 55

Multiple Choice

A projectile is projected from the origin with a velocity of 20.0 m/s at an angle of 30.0 degrees above the horizontal.The projectile lands on a roof that is 4.00 m height.What is the velocity vector when the projectile hits the roof?

• A) Vx = 17.3 m/s,Vy = +13.4 m/s
• B) Vx = 14.3 m/s,Vy = -3.23 m/s
• C) Vx = 15.2 m/s,Vy = -13.4 m/s
• D) Vx = 16.8 m/s,Vy = -3.95 m/s
• E) Vx = 17.3 m/s,Vy = -13.4 m/s