Acceleration of a particle changes when

English

Gujarati

Hindi

2.Motion in Straight Line

easy

Acceleration of a particle changes when

ADirection of velocity changes

BMagnitude of velocity changes

CBoth of above

DSpeed changes

Solution

(c)Because acceleration is a vector quantity

Standard 11

Physics

Share

Similar Questions

The relation between time and distance is $t = \alpha {x^2} + \beta x$, where $\alpha $ and $\beta $ are constants. The retardation is

hard

(AIEEE-2005)

Two particles $A$ and $B$ start from rest and move for equal time on a straight line. Particle $A$ has an acceleration of $2\,m / s ^2$ for the first half of the total time and $4\,m / s ^2$ for the second half. The particle $B$ has acceleration $4\,m / s ^2$ for the first half and $2\,m / s ^2$ for the second half. Which particle has covered larger distance?

medium

Refer to the graph in figure. Match the following

Graph Characteristics

$(A)$ $(i)$ has $v > 0$ and $a < 0$ throughout

$(B)$ $(ii)$ has $x > 0,$ throughout and has a point with $v = 0$ and a point with $a = 0$

$(C)$ $(iii)$ has a point with zero displacement for $t > 0$

$(D)$ $(iv)$ has $v < 0$ and $a > 0$

medium

The correct statement from the following is

easy

A particle initially at rest moves along the $x$-axis. Its acceleration varies with time as $a=4\,t$. If it starts from the origin, the distance covered by it in $3\,s$ is $………..\,m$

medium