DO NOW 90

Front

What is work in physics?

Back

Work is defined as the product of the force applied to an object and the distance over which that force is applied, in the direction of the force. It is measured in joules (J).

Front

What is the formula for calculating work?

Back

Work (W) = Force (F) × Distance (d) × cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is the unit of work?

Back

The unit of work is the joule (J), which is equivalent to one newton-meter (N·m).

Front

If no movement occurs, what is the work done?

Back

If there is no movement, the work done is 0 joules (0 J), regardless of the force applied.

Front

What is the relationship between force and work?

Back

Work is done when a force causes an object to move. If there is no movement, no work is done.

Front

What does it mean if work is negative?

Back

Negative work occurs when the force applied is in the opposite direction to the displacement of the object.

Front

What is gravitational force?

Back

Gravitational force is the force of attraction between two masses, such as the Earth and an object, typically measured in newtons (N).

Front

How do you calculate gravitational force?

Back

Gravitational force (F) can be calculated using the formula F = m × g, where m is mass in kilograms and g is the acceleration due to gravity (approximately 9.81 m/s² on Earth).

Front

What is the significance of the angle in the work formula?

Back

The angle (θ) in the work formula determines how much of the force contributes to the work done; only the component of the force in the direction of motion does work.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.