Astronauts are on a space mission to do research work. As a part of this mission, they throw a projectile on an unknown planet which follows the projectile path shown below. The projectile's status at an interval of 2 s is shown from 0 s to 6 s. The ball's velocity at t = 2 s is v = (3.0 i + 5.0 j). Calculate the velocity of the projectile at t = 0 s, 4 s, 6 s.

• A. v₀ = (3.0i - 10.0j) m/s, v₄ = (3.0i + 0j) m/s, v₆ = (3.0i + 5.0j) m/s
• B. v₀ = (3.0i + 10.0j) m/s, v₄ = (3.0i + 0j) m/s, v₆ = (3.0i - 5.0j) m/s
• C. v₀ = (3.0i + 7.5j) m/s, v₄ = (3.0i + 0j) m/s, v₆ = (3.0i - 7.5j) m/s
• D. v₀ = (3.0i - 7.5j) m/s, v₄ = (3.0i + 0j) m/s, v₆ = (3.0i + 7.5j) m/s

Answer: (B)