Motion, Mass, Weight, Forces, Scalars and Vectors

What is the primary purpose of using a micrometer screw gauge?

• To measure large distances
• To measure very small distances
• To measure volume
• To measure time intervals

When measuring the volume of an irregular object, what principle is used?

• Archimedes' principle
• Hooke's law
• Newton's second law
• Bernoulli's principle

If an object's speed is changing, what is happening to its velocity?

• It is constant
• It is decreasing
• It is accelerating
• It is becoming a scalar quantity

In a distance-time graph, what does a straight line indicate?

• Constant speed
• Acceleration
• Deceleration
• Variable speed

What is the gravitational field strength on Earth?

• 5 N/kg
• 9.8 N/kg
• 10 N/kg
• 12 N/kg

Which of the following statements is true regarding mass and weight?

• Mass changes with location, weight does not
• Weight is constant everywhere, mass is not
• Mass is a measure of matter, weight is a force
• Weight is measured in kilograms

According to Newton's second law, what is the relationship between force, mass, and acceleration?

• Force = mass + acceleration
• Force = mass - acceleration
• Force = mass × acceleration
• Force = mass / acceleration

What happens to an object in equilibrium?

• It is accelerating
• The sum of clockwise moments equals the sum of anticlockwise moments
• It is in motion
• It has no mass

Which of the following best describes a vector quantity?

• Has only magnitude
• Has both magnitude and direction
• Is always positive
• Is independent of direction

What is the principle of moments used for?

• To measure speed
• To determine the density of an object
• To check if something balances
• To calculate acceleration