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NSAA Physics - Mechanics Flashcards

6 cards from real NSAA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 NSAA Physics - Mechanics flashcards as text

  1. A ball is thrown vertically upward with an initial velocity of 20 m/s. What is the maximum height reached (g = 10 m/s²)?

    Answer: 20 m

    Using v² = u² - 2gh, with v=0 at maximum height: h = u²/2g = 400/20 = 20 m.

  2. A 5 kg block slides down a frictionless incline of 30°. What is its acceleration?

    Answer: 4.9 m/s²

    The component of gravity along the incline is g sin30° = 9.8 × 0.5 = 4.9 m/s².

  3. Two objects of mass 3 kg and 5 kg collide and stick together. If the 3 kg object was moving at 8 m/s and the 5 kg was stationary, what is the final velocity?

    Answer: 3 m/s

    By conservation of momentum: 3×8 = (3+5)v, so v = 24/8 = 3 m/s.

  4. A car of mass 1000 kg accelerates from rest to 20 m/s in 10 s. What net force acts on it?

    Answer: 2000 N

    Acceleration = 20/10 = 2 m/s²; F = ma = 1000 × 2 = 2000 N.

  5. A spring of spring constant 200 N/m is compressed by 0.05 m. What is the elastic potential energy stored?

    Answer: 0.25 J

    Elastic PE = ½kx² = ½ × 200 × (0.05)² = 0.25 J.

  6. An object moves in a circle of radius 2 m at a speed of 4 m/s. What is its centripetal acceleration?

    Answer: 8 m/s²

    Centripetal acceleration a = v²/r = 16/2 = 8 m/s².

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  1. esat-tmua.ac.uk — Late registration, registration deadline, fees, exam format, passing score, registration, score release, test dates, time limit, exam information · verified Oct 2026
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