Question

1. a car moves around a wide turn going 45 mi/hr the whole time. the car has a constant ______.

Explanation:

Speed is a scalar quantity that only considers the magnitude of how fast an object is moving. The car is moving at 45 mi/hr throughout the turn, so its speed (the magnitude of its motion) is constant. Velocity is a vector (includes direction), and since the car is turning, its direction (and thus velocity) changes. Acceleration involves changes in velocity (either speed or direction), so the car is accelerating because its direction (and velocity) is changing. Direction is changing as the car goes around the turn.

Answer:

speed