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, how much work is done?

Back

If there is no movement, the work done is 0 joules (0 J).

Front

What is the relationship between force and work?

Back

Work is done when a force causes an object to move. If the force is applied but 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 on an object?

Back

Gravitational force (weight) can be calculated using the formula: Weight (W) = mass (m) × gravitational acceleration (g), where g is 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. A force applied in the same direction as the movement does maximum work.

Front

What is the difference between kinetic and potential energy?

Back

Kinetic energy is the energy of an object in motion, while potential energy is the stored energy of an object due to its position or state.