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QCAA Physics Unit 3

Total questions: 13

Worksheet time: 13mins

Name
Class
Date
1.

Which list contains only vector quantities?

a)

Weight, velocity, acceleration

b)

acceleration, force, speed

c)

charge, momentum, impulse

d)

colour charge, electric field, force

2.

A bowling ball is rolled off the edge of a building. At the exact moment the bowling ball dropped off the edge of the building, a basketball was dropped straight down from the same height. Assuming air resistance is negligible.

Select the statement that is true:

a)

The bowling ball will land before the basketball.

b)

The basketball and the bowling ball travel the same

horizontal distance as they fall.

c)

The basketball and the bowling ball will reach the same velocity just before they land.

d)

The basketball and the bowling ball will reach the same vertical velocity just before they

land.

3.

Calculate the mass of an object that weighs 528 𝑁 on a planet where g = 1.6 m/s/s

a)

0.003 N

b)

330 Kg

c)

330 N

d)

0.003 Kg

4.

Select the true statement about an object in uniform circular motion:

a)

Uniform circular motion is caused by a centrifugal force acting on the object

b)

A free body diagram of an object in uniform circular motion shows a centripetal force acting inward and a centrifugal force acting outward.

c)

A free body diagram of an object in uniform circular motion shows a centripetal force

acting outward and a centrifugal force acting inward.

d)

The centripetal force is the net force acting on an object in uniform circular motion.

5.

Select the true statement:

a)

The gravitational constant, G is the same regardless of which planet you are on.

b)

Acceleration due to gravity, g is the same regardless of which planet you are on.

c)

Acceleration due to gravity, G is the same regardless of which planet you are on.

d)

The gravitational constant, g is the same regardless of which planet you are on.

6.

If the mass of the moon was doubled,

a)

the gravitational force of the moon on the Earth would double, but the gravitational force of the Earth on the moon would remain the same.

b)

the gravitational force of the Earth on the moon would double, but the gravitational force of the moon on the Earth would remain the same.

c)

Both the gravitational force of the Earth on the moon and the gravitational force of the moon on the Earth would double.

d)

Both the gravitational force of the Earth on the moon and the gravitational force of themoon on the Earth would remain the same

7.

If the distance between the Sun and the planet Mars was doubled,

a)

the gravitational force of the Sun on Mars would be unchanged.

b)

the gravitational force of the Sun on Mars would reduce by a factor of 2.

c)

the gravitational force of the Sun on Mars would reduce by a factor of 4.

d)

the gravitational force of the Sun on Mars would be squared.

8.

If the mass of a satellite doubles, and its speed remains unchanged, the radius of its orbit

a)

Doubles

b)

halves

c)

squares

d)

remains the same

9.

One volt is equivalent to

a)

The electrical energy possessed by each electron at a particular location.

b)

The electrical energy possessed by each coulomb of charge at a particular location.

c)

The charge generated by each joule of electrical energy in a battery.

d)

he number of electrons generated by each joule of electrical energy in a battery.

10.

An electron moving through a vacuum with a constant velocity

a)

creates neither an electric field nor a magnetic field

b)

creates an electric field but no magnetic field

c)

creates a magnetic field but no electric field

d)

creates both an electric field and a magnetic field

11.

A copper wire in a magnetic field experiences the greatest force when

a)

the current in the wire is perpendicular to the magnetic field

b)

the current in the wire is parallel to the magnetic field

c)

if the magnetic field is changing

d)

no matter what the orientation of the wire to the magnetic field the force will remain the same

12.

Electromotive force (EMF) is equivalent to

a)

Voltage

b)

Current

c)

Resistance

d)

Electrical potential

13.

Faraday’s Law states that 𝑒𝑚𝑓=−𝑛Δϕ/Δt. In this law, Δ𝜙 represents

a)

The change in the area of a loop of wire

b)

The change in magnetic field strength inside a loop of wire

c)

the change in magnetic flux through a loop of wire

d)

The change in the angle between a magnetic field and a loop of wire