Question

differs from speed in that objects can have the same speed, but have different
timing; timings
vector; vectors
velocity; velocities
acceleration; accelerations
12 choose the best answer.
is the rate of motion in a certain amount of time
acceleration
velocity

Explanation:

• First question:
• Speed is a scalar quantity (only magnitude). Velocity is a vector quantity (magnitude and direction). So objects can have same speed (magnitude) but different velocities (if directions differ).
• Second question:
• Velocity is defined as the rate of motion (displacement per unit time). Acceleration is the rate of change of velocity.

Answer:

• First question: Velocity; velocities
• Second question: Velocity