Question

Projectile is fired with initial velocity u = 12î +3j)m/s, where i and i are unit vectors along horizontal and vertical direction respectively.
1. The time of flight of the projectile is:
(1) 0.6s (2) 0.3 s (3) 0.9 s (4) 0.4s

2.The horizontal range of projectile is:
(1) 2.2 m (2) 3.2 m (3) 4.2 m (4) 1.2 m

3.Maximum height attained by the projectile is: (1) 0.3 m (2) 0.45 m (3) 0.6 m (4) 0.90 m

4. The speed at the highest point :
(1) O m/s (2) 5 m/s (3) 2 m/s (4) 3 m/s

5.The velocity of projectile on striking the ground :
(1) (2 +31) m/s (2) 1-2-3j)m/s 9 (3) 1-2 i +31) m/s (4) (21-3i)m/s e- he at of​

Answer 1

Answer:

1) 0.6sec

2) 1.2m

3) 0.45m

4) 2m/s

5) (2i - 3j)m/s

Explanation:

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