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Scalar vs Vector Quantities and Force Definitions

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Scalar vs Vector Quantities and Force Definitions

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Questions and Answers

List two examples of scalar quantities.

Distance, area

List two examples of vector quantities.

Displacement, velocity

What is the formula for force?

F = ma

Name two contact forces.

Tension, friction Signup and view all the answers

Define mass.

Mass is a measure of the matter in an object. Signup and view all the answers

What is weight?

Weight is the force of gravity on a body. Signup and view all the answers

What is the unit of weight denoted as?

Newtons (N) Signup and view all the answers

Approximately what value is often used for acceleration due to gravity on Earth?

10 m/s^2 Signup and view all the answers

What does SOH-CAH-TOA stand for?

Sine is Opposite over Hypotenuse, Cosine is Adjacent over Hypotenuse, Tangent is Opposite over Adjacent Signup and view all the answers

What is the acceleration due to gravity on the Moon?

3.7 m/s^2 Signup and view all the answers

How do you calculate the resultant force for perpendicular forces using Pythagoras' Theorem?

Square root of the sum of the squares of the forces Signup and view all the answers

In the given example with forces of 40 N and 70 N, what is the value of the resultant force?

80.6 N Signup and view all the answers

In the context of forces, how is a negative sign interpreted?

Indicates the left direction Signup and view all the answers

What is the formula to calculate the angle of the resultant force?

tan^(-1)(70/40) Signup and view all the answers

How can diagrams help in understanding problems involving forces?

Diagrams can visually represent forces and aid in applying mathematical principles. Signup and view all the answers

What is the relationship between Newtons per kilogram (N/kg) and meters per second squared (m/s^2)?

They are equivalent units Signup and view all the answers

What is the velocity of Anjali when swimming across the river in still water?

1.5 m/s Signup and view all the answers

How does the river's velocity affect Anjali's resultant velocity?

The river's velocity adds or subtracts from Anjali's velocity depending on the direction. Signup and view all the answers