Acceleration of Free Fall Quiz Questions and Answers PDF - 89

MCQ 441: A free falling object under gravity in air has a decreasing acceleration due to

1. air resistance
2. some force
3. height
4. speed

MCQ 442: A girl dropped a pen from the top of a building. If the pen is dropped 9 m from the ground, how long would the pen take to hit the ground?

1. 1.34 s
2. 2.98 s
3. 3.25 s
4. 25 s

MCQ 443: Potential energy can be converted into

1. heat energy
2. kinetic energy
3. chemical energy
4. magnetic energy

MCQ 444: If l_f is specific latent heat of fusion and m is the mass of the solid, then the latent heat of fusion(L_f) is equal to

1. L_f = l_f / m
2. L_f = l_f + m
3. L_f = l_f × m
4. L_f = l_f - m

MCQ 445: The particles are very far apart and randomly arranged and will occupy any available space in

1. liquids
2. solids
3. both solids and gases
4. gases