What is the resultant velocity when a car is moving at 60 mph against the wind blowing in the opposite direction at 15 mph?

To find the resultant velocity of a car moving against the wind, you need to consider the velocities of the car and the wind and their directions. The resultant velocity is the vector sum of these velocities.

In this case, the car is moving at 60 mph in one direction, while the wind is blowing in the opposite direction at 15 mph. Since the wind is opposing the motion of the car, we will subtract the wind velocity from the car's velocity.

Thus, to find the resultant velocity, subtract the wind velocity (15 mph) from the car's velocity (60 mph):

Resultant velocity = Car's velocity - Wind velocity

Resultant velocity = 60 mph - 15 mph

Resultant velocity = 45 mph

Therefore, the resultant velocity when the car is moving at 60 mph against the wind blowing in the opposite direction at 15 mph is 45 mph.