H Physics LT1-LT3

Front

What is the definition of displacement in physics?

Back

Displacement is a vector quantity that refers to the change in position of an object. It is the shortest distance from the initial to the final position, along with the direction.

Front

How do you calculate the resultant displacement when given two perpendicular displacements?

Back

Use the Pythagorean theorem: Resultant displacement = √(x² + y²), where x and y are the perpendicular displacements.

Front

What is the difference between speed and velocity?

Back

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

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time. It is a vector quantity.

Front

How do you calculate acceleration?

Back

Acceleration (a) can be calculated using the formula: a = (final velocity - initial velocity) / time.

Front

What is the formula for calculating distance when given acceleration and time?

Back

Distance (d) can be calculated using the formula: d = initial velocity * time + 0.5 * acceleration * time².

Front

What is the significance of a negative acceleration?

Back

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

Front

What is the formula for final velocity when initial velocity, acceleration, and time are known?

Back

Final velocity (v) can be calculated using the formula: v = initial velocity + (acceleration * time).

Front

What is the relationship between distance, speed, and time?

Back

The relationship is given by the formula: distance = speed * time.

Front

How do you determine the length of a ramp needed for a car to reach a certain velocity?

Back

Use the formula: length = (final velocity² - initial velocity²) / (2 * acceleration).