1st Year Physics Chapter 3 Test03. Translator Motion

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. What is the force experienced by a projectile after the initial force that launched it into the air in the absence of air resistance?
   1. The gravitational force
   2. The nuclear force
   3. The contact force
   4. The electromagnetic force
2. A body starting from rest means:
   1. vᵢ = 0
   2. v𝒻 = 0
   3. a = 0
   4. t = 0
3. The horizontal velocity of a projectile is:
   1. Constant
   2. Increasing
   3. Decreasing
   4. Zero
4. During an explosion, the total momentum before explosion is:
   1. Maximum
   2. Equal to final
   3. Zero
   4. Cannot be determined
5. A light object hitting a heavy object at rest usually:
   1. Stops moving
   2. Rebounds with the same speed
   3. Moves faster
   4. Breaks apart
6. Two equal masses colliding elastically exchange:
   1. Directions only
   2. Velocities
   3. Accelerations
   4. Energies
7. Direction of velocity at any instant is given by:
   1. θ = tan(vᵧ/vₓ)
   2. θ = tan⁻¹(vᵧ/vₓ)
   3. θ = sin⁻¹(vᵧvₓ)
   4. θ = 1/vᵧ
8. In an inelastic collision, kinetic energy is:
   1. Conserved
   2. Not conserved
   3. Doubled
   4. Always zero
9. The formula for maximum height of a projectile is:
   1. H = vᵢ² cos²θ / g
   2. H = vᵢ sinθ t
   3. H = vᵢ² sinθ / g
   4. H = vᵢ² sin²θ / 2g
10. The horizontal range of a projectile is:
    1. R = vᵢt
    2. R = vᵢ² sin2θ / g
    3. R = 2vᵢ² / sinθ
    4. R = vᵢ² sin²θ / g