Honors Physics Additional Review 2024 | Accelerated Motion

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time. It is a vector quantity, meaning it has both magnitude and direction.

Front

What is the formula for calculating acceleration?

Back

The formula for acceleration (a) is given by: a = \frac{\Delta v}{\Delta t}, where \Delta v is the change in velocity and \Delta t is the change in time.

Front

If an object is moving with constant acceleration, what does its velocity-time graph look like?

Back

The velocity-time graph of an object with constant acceleration is a straight line with a positive or negative slope, depending on the direction of acceleration.

Front

What is the unit of acceleration in the International System of Units (SI)?

Back

The unit of acceleration in SI is meters per second squared (m/s²).

Front

How do you calculate the distance traveled by an object under constant acceleration?

Back

The distance (d) can be calculated using the formula: d = v_i t + \frac{1}{2} a t^2, where v_i is the initial velocity, a is the acceleration, and t is the time.

Front

What does a negative acceleration indicate about an object's motion?

Back

Negative acceleration indicates that the object is slowing down or decelerating.

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

How can you determine the acceleration of an object from a velocity-time graph?

Back

The acceleration can be determined by calculating the slope of the line on a velocity-time graph. A steeper slope indicates greater acceleration.

Front

What is uniform acceleration?

Back

Uniform acceleration refers to a constant rate of change of velocity over time.

Front

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

Back

Using the formula a = \frac{\Delta v}{\Delta t}, the acceleration is a = \frac{20 m/s - 0 m/s}{5 s} = 4 m/s².