? _max = 120 ?

v ₁ = - v ₀ i, v ₂,

v = v ₀, all particles

1.79 cm higher on west bank

1. v = v ₀(1- ),

2. W = m (1 - ),

3. W = m = 2 T,

1. v ₁₀ = 0.6302 v ₀,

2. v ₉ = 0.03317 v ₀

1. ,

2. v _A = v ₀ i

1. 

2. ? _max = 60

1. 

2. P = mg[(l + ?)sin ? + (1 - ?)cos ?]

1. ? _max = tan ^-1 1.1732 = 49.56

2. ? = 34.86

1. Upward

Downward

1. m = 2 x ?,

2. x _max = 0.9063 L, P = 1.077 mg

1. m = 2 x ? ., m = - ?, - mg,

2. 

where

1. 
2. 

   ,

3. (c) ? = mv ₀ j

1. , , 2 ml ² = 0

   

2. , ? = ? ₀ t

1. At t = 0, ? _r = mv ₀. At t = R/v ₀, ? _r = -mv ₀

2. v = R ? ₀,

3. (first impulse)

   (second impulse),

1. sin ? ₁ - sin ? ₂ = 0

2. 

3. v _B = 1.0824 downward, (d)

1. = 4 mv ₀, (0+) = 0, ?, ?,