Physics: 2D basics

Front

What is the cosine function used for in trigonometry?

Back

The cosine function relates the adjacent side of a right triangle to the hypotenuse. It is defined as cos(θ) = adjacent/hypotenuse.

Front

How do you calculate the horizontal component of a force applied at an angle?

Back

The horizontal component (F_net x) can be calculated using F_net x = F * cos(θ), where F is the magnitude of the force and θ is the angle of application.

Front

What is the formula to find the vertical component of a force applied at an angle?

Back

The vertical component (F_net y) can be calculated using F_net y = F * sin(θ), where F is the magnitude of the force and θ is the angle of application.

Front

If a boat is traveling at 40 m/s at an angle of 30 degrees, how do you find the x component of its velocity?

Back

The x component can be found using the formula: x component = 40 * cos(30°).

Front

What does it mean for a vector to be described as '30 degrees East of North'?

Back

It means that the vector is directed 30 degrees away from the North towards the East.

Front

What is the sine function used for in trigonometry?

Back

The sine function relates the opposite side of a right triangle to the hypotenuse. It is defined as sin(θ) = opposite/hypotenuse.

Front

How do you determine the net force acting on an object when multiple forces are applied?

Back

The net force is the vector sum of all individual forces acting on the object, calculated by adding their components in each direction.

Front

What is the relationship between the angles and sides in a right triangle?

Back

In a right triangle, the sides are related to the angles through trigonometric functions: sine, cosine, and tangent.

Front

How do you find the missing speed in the Y direction if given the total speed and angle?

Back

Use the formula: Y speed = total speed * sin(angle).

Front

What is the tangent function used for in trigonometry?

Back

The tangent function relates the opposite side to the adjacent side of a right triangle. It is defined as tan(θ) = opposite/adjacent.