Please show step by step thank you 3 A projectile is launche

Please show step by step thank you!

3. A projectile is launched from level ground with a velocity of 40 m/s at an angle of 30° from the ground. What will be the vertical component of the projectile\'s velocity just before it strikes the ground? (sin 30° 05, cos 30 = 0.87) (A) 10 m/s (B) 20 m/s (C) 30 m/s (D) 35 m/s (E) 40 m/s 5. The acceleration in the x -direction and the y direction, respectively, are (A) zero, 3 m/s (B) zero, 6 m/s (C) 5 m/s,3 m/s (D) 5 m/s, 6 m/s (E) 5 m/s\', 12 m/s

Solution

3.

vertical component at start and at the end is same = Vsin(thetha) = 40*sin(30) = 20 m/s

option B

5.

in x direction there is no force => acc = 0

in y direction net force is due to gravity = mg

=> acc = mg/g = 10 m/s^2

option E