Test - Kinematics

Front

What is displacement?

Back

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

Front

What is the difference between distance and displacement?

Back

Distance is a scalar quantity that measures the total path length traveled by an object, while displacement is a vector quantity that measures the shortest straight-line distance from the starting point to the endpoint, including direction.

Front

What are vector quantities?

Back

Vector quantities are physical quantities that have both magnitude and direction. Examples include velocity, acceleration, and displacement.

Front

What are scalar quantities?

Back

Scalar quantities are physical quantities that have only magnitude and no direction. Examples include mass, temperature, and distance.

Front

What is velocity?

Back

Velocity is a vector quantity that refers to the rate of change of displacement with respect to time. It includes both speed and direction.

Front

What is acceleration?

Back

Acceleration is a vector quantity that measures the rate of change of velocity with respect to time. It can be positive (speeding up) or negative (slowing down).

Front

What is the formula for calculating average acceleration?

Back

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

Front

If an object has an initial velocity of 10 m/s and accelerates at 3 m/s² for 4 seconds, what is its final velocity?

Back

Final velocity = initial velocity + (acceleration × time) = 10 m/s + (3 m/s² × 4 s) = 22 m/s.

Front

What are the units of velocity?

Back

The units of velocity are meters per second (m/s).

Front

What is the significance of direction in vector quantities?

Back

Direction is crucial in vector quantities because it determines the vector's orientation in space, which affects the overall result when vectors are added or subtracted.