AS Level Physics U5 Motion in Fluids Quiz

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Which of these things does NOT affect the amount of air drag force a falling object will experience?

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Which of these objects would have the largest terminal velocity?

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A stationary body floats in water.

Which statement about the forces acting on the body is correct?

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A ball falls from rest through air and eventually reaches a constant velocity.
For this fall, forces X and Y vary with time as shown.

What are forces X and Y?

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An object, immersed in a liquid in a tank, experiences an upthrust.
What is the physical reason for this upthrust?

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A ball is falling at terminal speed in still air.
The forces acting on the ball are upthrust, viscous drag and weight.

What is the order of increasing magnitude of these three forces?

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A submarine is in equilibrium in a fully submerged position.

What causes the upthrust on the submarine?

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The diagram represents a sphere under water. P, Q, R, and S are forces acting on the sphere, due to the pressure of the water.
Each force acts perpendicularly to the sphere’s surface. P and R act in opposite directions vertically. Q and S act in opposite directions horizontally.

Which information about the magnitudes of the forces is correct?

Quiz on motion in fluids for AS Level Physics Topic 5 forces, Density and Pressure

AS Level Physics U5 Motion in Fluids Quiz

Which of these things does NOT affect the amount of air drag force a falling object will experience?

Which of these objects would have the largest terminal velocity?

A stationary body floats in water. Which statement about the forces acting on the body is correct?

A ball falls from rest through air and eventually reaches a constant velocity. For this fall, forces X and Y vary with time as shown. What are forces X and Y?

An object, immersed in a liquid in a tank, experiences an upthrust. What is the physical reason for this upthrust?

A ball is falling at terminal speed in still air. The forces acting on the ball are upthrust, viscous drag and weight. What is the order of increasing magnitude of these three forces?

A submarine is in equilibrium in a fully submerged position. What causes the upthrust on the submarine?

A stationary body floats in water.

Which statement about the forces acting on the body is correct?

A ball falls from rest through air and eventually reaches a constant velocity.
For this fall, forces X and Y vary with time as shown.

What are forces X and Y?

An object, immersed in a liquid in a tank, experiences an upthrust.
What is the physical reason for this upthrust?

A ball is falling at terminal speed in still air.
The forces acting on the ball are upthrust, viscous drag and weight.

What is the order of increasing magnitude of these three forces?

A submarine is in equilibrium in a fully submerged position.

What causes the upthrust on the submarine?