b. An object of mass 5 kg is projected with a velocity of 20 m/s at an angle of 60° to the horizontal (Figure Q1). At th

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B An Object Of Mass 5 Kg Is Projected With A Velocity Of 20 M S At An Angle Of 60 To The Horizontal Figure Q1 At Th 1 (72.61 KiB) Viewed 18 times

b. An object of mass 5 kg is projected with a velocity of 20 m/s at an angle of 60° to the horizontal (Figure Q1). At the highest point of its path, the projectile explodes and breaks up into two fragments of masses 1 kg and 4 kg and these fragments separate horizontally. The explosion releases internal energy such that the kinetic energy of the system at the highest point is doubled. Calculate the separation (d) between two fragments when they reach the ground. [Hint: Use projectile motion, kinetic energy and conservation of momentum equations] (17 marks) V sin a = 0 a = 60° -d₂- -d₁ V cos a = 20 x cos 60° = 10 m/s Figure Q1