Question

When you throw a ball in air with some velocity at some angle with horizontal, vertical
component of velocity at highest point is zero and horizontal component of velocity
remains unchanged. Velocity of a projectile at a height 15m from the ground is
(20i +10j) m/s. Here i and j are the unit vectors along horizontal and vertical upward
direction. (g=10m/s)
1. The speed with which the particle projected from the ground is
(a) 30m/s
(b)202m/s
(c)10v5m/s
(d) 10m/s​

Answer 1

Answer:

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Explanation:

bbxjxjxbjxuxzzxdjxhdjuxbxbxbh be xhxjhxbxjdhdjhzjdvjxnsodnxkxnlxbxjxbjxbdixhdugeueyiegd it ehuteetejevhdudbxjbxgxjdvdjgxjxbjxbdhvxjdbxhbxhxkjxbskdbdudbidb