Question

sarah wanted to know the velocity of an airplane traveling from houston to dallas. after recording the distance (in miles) and time (in hours) it took to travel to dallas, what other measurement does sarah need to determine the airplanes velocity?
a acceleration
b direction
c force
d inertia

Explanation:

Velocity is a vector quantity that requires both magnitude (speed, calculated from distance and time) and direction. Sarah has distance (magnitude - related) and time, so she needs direction to determine velocity. Acceleration involves change in velocity, force relates to Newton's laws, and inertia is a property of mass; none are needed for velocity here.

Answer:

B. direction