Physics - Acceleration - Revision Quiz

.......................................... is the average velocity over an infinitesimally small-time interval.

• Instantaneous velocity

• Instantaneous acceleration

• Time derivative

• Acceleration

Answer explanation

Instantaneous velocity refers to the average velocity over an infinitesimally small time interval, capturing the object's speed and direction at a specific moment.

The slope of the tangent line on position vs. time graph is the ....................................

• instantaneous velocity

• instantaneous acceleration

• time derivative

• acceleration

Answer explanation

The slope of the tangent line on a position vs. time graph represents the instantaneous velocity, as it indicates the rate of change of position with respect to time at a specific moment.

The straight line through a pair of infinitely close points on a curve is ........................

• instantaneous acceleration

• time derivative

• acceleration

• tangent line

............................ is the rate at which the value of function changes with time.

• Instantaneous velocity

• Instantaneous acceleration

• Time derivative

• Acceleration

............................ is a vector that is the time derivative of velocity.

• Instantaneous velocity

• Instantaneous acceleration

• Time derivative

• Acceleration

............................................... is the motion with constant acceleration.

• Instantaneous velocity

• Instantaneous acceleration

• Time derivative

• Constant accelerated motion

Answer explanation

Constant accelerated motion refers to motion where the acceleration remains unchanged over time.

This results in a linear graph (straight line).

.................................... is the average acceleration over an infinitesimally small time interval.

• Instantaneous velocity

• Instantaneous acceleration

• Time derivative

• Constant accelerated motion

Answer explanation

Instantaneous acceleration refers to the average acceleration over an infinitesimally small time interval, capturing the acceleration at a specific moment, unlike average acceleration which considers a larger time frame.

............................ is the slope of the tangent line at each instant on a velocity vs. time graph.

• Instantaneous velocity

• Instantaneous acceleration

• Time derivative

• Constant accelerated motion

An object falling without resistance under the influence of Earth’s gravity is in ...............

• free fall

• uniform motion

• constant velocity

• no correct answer

Answer explanation

An object falling under the influence of Earth's gravity, without resistance, is in free fall. This means it accelerates due to gravity, distinguishing it from uniform motion or constant velocity, which imply no acceleration.

A constant acceleration toward the center of the earth is called ........................

• instantaneous velocity

• instantaneous acceleration

• time derivative

• acceleration due to gravity