Homework - acceleration

• Physics
• Lower Secondary (Key Stage 3)

Homework - acceleration

What is the definition of acceleration in physics?

1. Rate of change of velocity
2. Distance covered over time
3. Force acting on an object
4. Rate of change of speed

When does acceleration occur in an object?

1. When an object changes speed or direction
2. When an object experiences balanced forces
3. When an object remains at a constant speed
4. When an object changes shape

What is the unit of measurement for acceleration?

1. Meters per second
2. Metres per second squared (m/ss)
3. Miles per hour
4. Kilometers per hour

How is average acceleration calculated?

1. ∆v * t
2. ∆v / t
3. a * t
4. a / ∆v

What does it mean if acceleration is a negative value?

1. The object is speeding up
2. The object is stationary
3. The object is slowing down
4. The object is changing direction

What is the unit of measurement for acceleration?

1. inches per second squared
2. m/ss
3. kilometers per hour
4. metres per second squared

What does acceleration measure?

1. the rate of change of velocity
2. distance traveled
3. time taken to travel

How is acceleration calculated?

1. measuring the distance traveled
2. measuring the change in velocity over time
3. measuring the force applied

What does a greater resultant force lead to?

1. slower velocity
2. greater acceleration
3. constant speed

How is acceleration usually expressed?

1. in feet per second squared
2. in kilometers per hour
3. in metres per second squared

What do you need to know to calculate the change in velocity?

1. Initial velocity and final velocity
2. Acceleration and mass
3. Force and energy
4. Distance and time

What symbol is used for initial velocity?

1. 'v'
2. 'u'
3. 't'
4. 'a'

How is the change in velocity calculated?

1. ∆v = v - u
2. ∆v = v * u
3. ∆v = v / u
4. ∆v = v + u

Which letter represents final velocity?

1. 'u'
2. 't'
3. 'a'
4. 'v'

Why is 'u' used to symbolize initial velocity?

1. Because it's the easiest letter
2. Because it's the first letter of 'velocity'
3. Because 'u' comes before 'v' in the alphabet
4. Because it stands for 'upwards'

Which formula can be used to calculate uniform acceleration without knowing the time taken?

1. s = ut + (1/2)at^2
2. v = u + 2as
3. v2 - u2 = 2as
4. v = u + at

What does the formula v2 - u2 = 2as represent?

1. Calculation of uniform acceleration
2. Calculation of power
3. Calculation of kinetic energy
4. Calculation of work done

What does displacement represent in uniform acceleration?

1. Distance and direction of a journey
2. Time taken for the journey
3. Acceleration of the journey
4. Speed of the journey

What does the term 'vector' mean in the context of displacement?

1. Shows only time
2. Shows distance and direction
3. Shows only speed
4. Shows only distance

How is the final velocity related to the initial velocity in uniform acceleration?

1. Final velocity is related by v2 - u2 = 2as
2. Final velocity increases with initial velocity
3. Final velocity decreases with initial velocity
4. Final velocity is independent of initial velocity