Question

1
1
coulide afth ( t=4 sec 1 )
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D Time go flight of Pin ( 4 mathrm{sec} ).
( frac{2 cup p}{g cos 60^{circ}}=4 )
( Rightarrow frac{2 cdot U_{p}}{10 cdot frac{1}{2}}=4 )
( Rightarrow 4 cup_{p}=40 )
( Rightarrow quad y_{1}=10 mathrm{m} / mathrm{s} )

# 5. A particle P is projected from a point on the surface of long smooth inclined plane (see figure). Simultaneously another particle Q is released on the smooth inclined plane from the same position. P and Q collide after t = 4 second. The speed of projection of P is (A) 5 m/s (B) 10 m/s (C) 15 m/s (D) 20 m/s

Solution