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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 projectile is launched horizontally at 15 m/s from a height of 20 m. How long does it take to hit the ground (g = 10 m/s²)?

    Answer: 2 s

    Using h = ½gt²: 20 = ½×10×t², giving t² = 4, so t = 2 s.

  2. What is the momentum of a 0.5 kg ball moving at 12 m/s?

    Answer: 6 kg·m/s

    Momentum p = mv = 0.5 × 12 = 6 kg·m/s.

  3. A force of 50 N acts on an object over a displacement of 8 m in the direction of the force. What work is done?

    Answer: 400 J

    Work = Force × displacement = 50 × 8 = 400 J.

  4. A pulley system has a mechanical advantage of 4. What input force is needed to lift a 200 N load?

    Answer: 50 N

    Input force = Load / MA = 200 / 4 = 50 N.

  5. An object of weight 60 N is held stationary on a surface. What is the normal reaction force from the surface?

    Answer: 60 N

    By Newton's third law, the normal force equals the weight when the object is in equilibrium on a horizontal surface.

  6. A 2 kg mass is raised 5 m vertically. What is the gain in gravitational potential energy (g = 10 m/s²)?

    Answer: 100 J

    GPE = mgh = 2 × 10 × 5 = 100 J.

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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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