Understanding Vectors and Kinematics

What is the result of adding two vectors of equal magnitude in the same direction?

• The resultant vector has a magnitude that is three times the magnitude of the individual vectors and points in a perpendicular direction.

• The resultant vector has a magnitude that is twice the magnitude of the individual vectors and points in the same direction.

• The resultant vector has a magnitude equal to the individual vectors and points in the same direction.

• The resultant vector has a magnitude that is half the magnitude of the individual vectors and points in the opposite direction.

If vector A has a magnitude of 5 units and vector B has a magnitude of 3 units in the opposite direction, what is the resultant vector's magnitude?

• 2 units

• 5 units

• 1 unit

• 8 units

Define displacement in your own words.

• Displacement refers to the change in speed of an object over time.

• Displacement is the average position of an object during its motion.

• Displacement is the shortest distance from the initial to the final position of an object, along with the direction.

• Displacement is the total distance traveled by an object regardless of direction.

If a person walks 3 km east and then 4 km west, what is their total distance traveled?

• 6 km

• 8 km

• 5 km

• 7 km

What is the difference between speed and velocity?

• Speed can be negative, while velocity cannot.

• Velocity measures distance only, not direction.

• Speed is scalar; velocity is vector (includes direction).

• Speed is always greater than velocity.

If a car travels 60 km in 1 hour, what is its speed?

• 60 km/h

• 50 km/h

• 70 km/h

• 30 km/h

A runner completes a 400 m lap in 50 seconds. What is their average speed?

• 8 m/s

• 12 m/s

• 10 m/s

• 6 m/s

If an object moves from point A to point B in a straight line, what is the relationship between distance and displacement?

• Distance and displacement are equal in magnitude when moving in a straight line.

• Distance and displacement are always different values.

• Displacement is the total path length traveled.

• Distance is always greater than displacement.

What is the formula for calculating average velocity?

• Average Velocity = Total Distance / Total Time

• Average Velocity = Total Displacement / Total Time

• Average Velocity = Initial Velocity + Final Velocity

• Average Velocity = Total Time / Total Displacement

If a car accelerates from rest to 20 m/s in 5 seconds, what is its average acceleration?

• 5 m/s²

• 4 m/s²

• 2 m/s²

• 10 m/s²