Understanding Acceleration

This video tutorial introduces the concept of acceleration, defined as the change in velocity over time. It explains the acceleration formula using velocity and time, highlighting when to use this formula. The video covers the units and vector nature of acceleration, and provides an example problem to demonstrate the calculation of acceleration, including negative acceleration. The tutorial concludes with a summary of the key points discussed.

What is the basic definition of acceleration?

• The rate of change of velocity over time

• The rate of change of speed over time

• The rate of change of distance over time

• The rate of change of force over time

When should you use the acceleration formula involving velocity and time?

• When the distance traveled is known

• When the change in velocity and time are known

• When the mass of the body is known

• When the force acting on the body is known

What is the formula for acceleration using initial and final velocities?

• a = (VF * VI) / T

• a = (VF + VI) / T

• a = (VF - VI) * T

• a = (VF - VI) / T

What is the unit of acceleration?

• Newton

• Kilometer per hour

• Meter per second squared

• Meter per second

Which of the following is true about acceleration?

• It cannot be negative

• It is a vector quantity

• It only has magnitude

• It is a scalar quantity

What does negative acceleration indicate?

• Velocity is increasing

• Velocity is constant

• Velocity is decreasing

• Velocity is zero

In the example problem, what is the initial velocity of the bus?

• 60 meters per second

• 80 meters per second

• 40 meters per second

• 100 meters per second

In the example problem, what is the final velocity of the bus?

• 100 meters per second

• 40 meters per second

• 80 meters per second

• 60 meters per second

How long does it take for the bus to change its speed in the example problem?

• 7 seconds

• 10 seconds

• 3 seconds

• 5 seconds

What is the calculated acceleration of the bus in the example problem?

• 8 meters per second squared

• 4 meters per second squared

• -4 meters per second squared

• -8 meters per second squared