Assertion : Retardation is directly opposite to velocity. Reason : Retardation is equal to time rate

English

Gujarati

Hindi

2.Motion in Straight Line

easy

$Assertion$ : Retardation is directly opposite to the velocity.
$Reason$ : Retardation is equal to the time rate of decrease of speed.

A

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

B

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

C

If the Assertion is correct but Reason is incorrect.

D

If both the Assertion and Reason are incorrect.

(AIIMS-2002)

Solution

${\rm{Retardation}} = \frac{{{\rm{decrease in velocity}}}}{{{\rm{time}}}}$

It acts opposite to velocity.

Standard 11

Physics

Share

Similar Questions

The displacement of a particle is given by $y = a + bt + c{t^2} – d{t^4}$. The initial velocity and acceleration are respectively

medium

The diagram shows the variation of $1 / v$ (where, $v$ is velocity of the particle) with respect to time. At time $t=3\,s$ using the details given in the graph, the instantaneous acceleration will be equal to $………..m/s^{2}$

hard

A particle moves along a straight line in such a way that it’s acceleration is increasing at the rate of $2 m/s^3$. It’s initial acceleration and velocity were $0,$ the distance covered by it in $t = 3$ second is …….. $m$

normal

The acceleration of a particle is increasing linearly with time $t$ as $bt$. The particle starts from the origin with an initial velocity ${v_0}$. The distance travelled by the particle in time $t$ will be

medium

The displacement of a particle as a function of time is shown in the figure. The figure shows that

easy