Question

The speedometer of a car moving to the east reads 55 mph. It passes another car that moves to the west at 55 mph. The cars have the same ____.
A. velocity
B. speed
C. same speed and velocity
D. neither the same speed nor the same velocity

Answer 1

The answer is B.

This is because both cars are moving at the same speed, but have different velocities due to the different directions they are moving in.

Answer 2

Answer: The correct answer is B.

Explanation:

Speed is the scalar quantity. It has magnitude only. For example, the car is moving with the speed of 60 km per hour.

The velocity is the vector quantity. It has magnitude as well as direction.

For example, the car is moving with the velocity of 60 km per hour in the north direction.

In the given problem, the speedometer of a car moving to the east reads 55 mph. It passes another car that moves to the west at 55 mph.

In this case, the speed is same which is equal to 55 mph but the velocities are different as the directions of the cars are different. The velocities of the cars are 55 mph to the east direction and 55 mph to the west direction.

Therefore, the cars have the same speed.