$CATEGORY: Science - TicTacLearn/7. Motion/7. Motion--Measuring the Rate of Motion

//Multiple Choice

When acceleration is in the same direction of velocity, it is said to be
{
= Positive
~ Negative
~ zero
~ double
}

When acceleration is in the opposite direction of velocity, it is said to be
{
~ Positive
= Negative
~ zero
~ half
}

Acceleration due to gravity is
{
~ non uniform
= constant
~ zero
~ very small
}

When velocity increases at constant speed, it is called
{
~ retardation
~ non uniform acceleration
= uniform acceleration
~ displacement
}

Acceleration is defined as\:
{
~ Change in speed over time
= Change in velocity over time
~ Change in distance over time
~ Change in force over time
}

Which of the following best describes velocity?
{
~ Speed without direction
= Speed with direction
~ Distance covered
~ Total path length
}

Which of the following describes the motion of a freely falling object?
{
~ Constant speed
= Uniform acceleration
~ Retardation
~ Circular motion
}

Which term describes a decrease in speed?
{
~ Acceleration
~ Velocity
= Retardation
~ Momentum
}

What does a negative acceleration indicate?
{
~ Increase in speed
~ Constant speed
~ No movement
= Decrease in speed
}

Which of the following equations relates speed, distance, and time?
{
~ v \= a x t
~ a \= d/t
= d \= v x t
~ v \= d/a
}

//True or False

Velocity can never be non-uniform. {F}

Velocity is speed with motion. {T}

Velocity is rate of change of distance. {F}

SI unit of speed and velocity are same. {T}

SI unit of velocity is m/s2. {F}

Acceleration is rate of change of velocity. {T}

When velocity remains constant with respect to time, acceleration is also constant. {F}

In uniform motion, velocity changes with time. {F}

In uniform motion acceleration is zero. {T}

In non-uniform motion acceleration is constant. {F}

Retardation is when acceleration and velocity are in same direction. {F}

On dividing total distance covered by the total time taken, we get velocity. {F}

//Match the Following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=Velocity -> rate of change displacement
=Speed -> rate of change of distance
=Acceleration -> rate of change of velocity
=Retardation -> rate of change of decreasing velocity
=SI unit of speed -> meter per second
=Uniform acceleration -> motion due to gravity
}


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