Acceleration Concepts 11th

Derive the formula for acceleration using the equation a = (v_f - v_i) / t.

• a = v_i / t

• a = (v_f + v_i) / t

• a = v_f / t

• a = (v_f - v_i) / t

What are the SI units for acceleration?

• km/h^2

• cm/s^2

• m/s

• m/s^2

Convert an acceleration of 5 m/s^2 to cm/s^2.

• 500 cm/s^2

• 550 cm/s^2

• 5 cm/s^2

• 50 cm/s^2

Explain the difference between average acceleration and instantaneous acceleration.

• Average acceleration is the rate of change of velocity, while instantaneous acceleration is the rate of change of speed.

• Average acceleration is the change in velocity over a specific time interval, while instantaneous acceleration is the acceleration at a specific moment in time.

• Average acceleration is the acceleration at a specific moment in time.

• Instantaneous acceleration is the change in velocity over a specific time interval.

Calculate the acceleration of a car that goes from 0 m/s to 20 m/s in 4 seconds.

• 3 m/s^2

• 15 m/s^2

• 5 m/s^2

• 10 m/s^2

What is the acceleration of an object in free fall near the surface of the Earth?

• 5.67 m/s^2

• 12.34 m/s^2

• 3.56 m/s^2

• 9.81 m/s^2

If an object has an acceleration of -2 m/s^2, what does this indicate?

• The object is stationary.

• The object is slowing down.

• The object is moving at a constant speed.

• The object is speeding up.

How does acceleration relate to velocity and time?

• Acceleration is constant regardless of velocity.

• Acceleration is inversely proportional to time.

• Acceleration is calculated by dividing the change in velocity by the time taken.

• Acceleration is the product of velocity and time.

Convert an acceleration of 9.81 m/s^2 to km/h^2.

• 9810000

• 10000000

• 9.81

• 981

Describe the concept of negative acceleration.

• Negative acceleration only occurs in a vacuum.

• Negative acceleration is the rate at which an object slows down.

• Negative acceleration is the same as positive acceleration.

• Negative acceleration is the rate at which an object speeds up.