IB IB Physics

Question 1

What is the SI unit of force in IB Physics?

Accepted Answer

Newton

Answer

The Newton (N) is the SI unit of force, defined as the force that gives a 1 kg mass an acceleration of 1 m/s².

Question 2

Which equation correctly represents Newton's Second Law of Motion?

Accepted Answer

F = ma

Answer

Newton's Second Law states that the net force on an object equals its mass multiplied by its acceleration (F = ma).

Question 3

A ball is thrown horizontally from a cliff. Which quantity remains constant throughout its flight, ignoring air resistance?

Accepted Answer

Horizontal velocity

Answer

With no air resistance, no horizontal force acts on the ball, so the horizontal velocity component remains constant throughout the flight.

Question 4

What value of gravitational field strength (g) is given in the IB Physics data booklet?

Accepted Answer

9.81 m/s²

Answer

The IB Physics data booklet specifies g = 9.81 m/s² as the standard acceleration due to gravity at Earth's surface.

Question 5

Which of the following is a vector quantity?

Accepted Answer

Displacement

Answer

Displacement is a vector quantity because it has both magnitude and direction, unlike speed, mass, and temperature which are scalars.

IB - International Baccalaureate Practice Test