chp 4 linear motion flashcardizz review

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can occur due to a change in speed or direction.

Front

True or False: When a car rounds a corner at a constant speed, its acceleration is zero.

Back

False. The car is accelerating because its direction is changing.

Front

What does it mean for an object to have constant speed?

Back

Constant speed means the object covers equal distances in equal intervals of time, regardless of direction.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

If a freely falling object is equipped with a speedometer, how much does its speed increase each second?

Back

About 10 m/s due to the acceleration of gravity.

Front

What is the acceleration of an object in free fall in the absence of air resistance?

Back

The acceleration is constant at approximately 9.8 m/s².

Front

True or False: The speed of a plane can be described as 300 mi/h.

Back

True. This is a valid description of speed.

Front

What happens to the velocity of an object moving in a circular path at constant speed?

Back

The velocity is constantly changing due to the continuous change in direction.

Front

What is meant by 'constant acceleration'?

Back

Constant acceleration means that the rate of change of velocity is the same over time.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) = (Final Velocity (v) - Initial Velocity (u)) / Time (t).