Question

final position - initial position *
displacement
distance
velocity
time
acceleration means *
speeding up
slowing down
change in velocity
all of the above
positive acceleration means *
speeding up
slowing down
change in velocity
all of the above

Explanation:

• First question: Displacement is defined as the final position minus the initial position. Distance is the total path length. Velocity is displacement over time. Time is a separate quantity.
• Second question: Acceleration is the rate of change of velocity. Speeding up (positive acceleration in the direction of motion), slowing down (negative acceleration or deceleration which is also a change in velocity) are all cases of acceleration as they involve a change in velocity.
• Third question: Positive acceleration means the object is speeding up when the acceleration is in the same direction as the velocity. Slowing down is negative acceleration (if we consider the direction). Change in velocity is a general term and “all of the above” is incorrect for positive acceleration as slowing down is not positive acceleration.

Answer:

1. displacement
2. All of the above
3. speeding up