24/25 Physics Midterm Review

Front

What is average acceleration?

Back

Average acceleration is the change in velocity divided by the time over which the change occurs. It is measured in meters per second squared (m/s²).

Front

How do you calculate velocity in the X direction using trigonometric functions?

Back

Velocity in the X direction can be calculated using the cosine function: Vx = V * cos(θ), where V is the total velocity and θ is the angle.

Front

What is the formula for calculating power?

Back

Power (P) is calculated using the formula P = Work / Time, where Work is the force applied over a distance.

Front

What is the acceleration due to gravity?

Back

The acceleration due to gravity near the Earth's surface is approximately -9.8 m/s².

Front

How do you calculate work done?

Back

Work done (W) is calculated using the formula W = Force x Distance, where Force is in Newtons and Distance is in meters.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is the significance of a negative acceleration?

Back

Negative acceleration indicates that an object is slowing down or decelerating.

Front

How do you find the resultant velocity of an object in two dimensions?

Back

The resultant velocity can be found using the Pythagorean theorem: V = √(Vx² + Vy²), where Vx and Vy are the velocities in the X and Y directions.

Front

What is the formula for kinetic energy?

Back

Kinetic energy (KE) is calculated using the formula KE = 0.5 * m * v², where m is mass in kilograms and v is velocity in meters per second.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.