Physics Problems With Solutions Mechanics For Olympiads And Contests Link Instant

Using the kinematic equation: v = u + at v = 10 + 2(5) = 20 m/s

Using the kinematic equation: s = ut + (1/2)at² s = 10(5) + (1/2)(2)(5)² = 50 + 25 = 75 m

Using Newton's second law: F - f = ma 10 - f = 2(3) f = 4 N

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A 2 kg ball collides elastically with a 3 kg ball at rest. The initial velocity of the 2 kg ball is 5 m/s. Find the final velocities of both balls.