# At a birthday party the celebrant pops a corked... - WAEC Physics 2016 Question

At a birthday party, the celebrant pops a corked fruit wine. If the cork shoots out of the bottle at an angle of 40

^{o}to the horizontal and travels a horizontal distance of 4.50m in 1.25s. Calculate the initial speed of the cork.A

4.2ms

^{-1}B

4.7ms

^{-1}C

5.6ms

^{-1}D

7.1ms

^{-1}**correct option:**b

R = Ucos\(\theta\) x t

U = \(\frac{R}{Cos \theta \times t}\)

= \(\frac{4.50}{Cos40N.25}\)

= 4.699m/s

U = \(\frac{R}{Cos \theta \times t}\)

= \(\frac{4.50}{Cos40N.25}\)

= 4.699m/s

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