4NA Physics Revision [2023 version]

When you are given a speed-time graph, what does the area under that curve/line give you?

• acceleration

• distance travelled

• instantaneous speed

Vernier calipers have inside jaws and outside jaws. What do outside jaws measure?

• depth

• thickness

• internal diameter

• external diameter

What does it mean when we say that object is under free-fall?

• weight is the only force acting on it.

• object is falling in air.

• object is falling without being attached to other objects.

A body near to the surface of the Earth is acted upon by a constant gravitational force.

What is the approximate initial rate of change of velocity of this body in free-fall?

• 1 m/s

• 1 m/s²

• 10 m/s

• 10 m/s²

Which quantity describes the property of a body that resists a change in its motion?

• density

• inertia

• moment

• weight

Formula for weight, mass and gravitational field strength is

• W = mg²

• W= mg

• W = m/g

Formulae to find acceleration ARE

• a = F/m

• a = (v - u) /t

• a = M/g

• a = Fm

Formula for moment is

• M = F x d

• M = F/d

To make an object more stable, we

• increase the height

• increase base area

• increase position of centre of gravity

• decrease position of centre of gravity

Formulae that allow you to find pressure ARE

• P = F x A

• P = F / A

• F = P x A

• F = P / A