Let $v$ and a denote the velocity and acceleration respectively of a particle in the dimensional motion
The speed of the particle decreases when $v \cdot a < 0$
The speed of the particle increases when $v \times a > 0$
$(a)$ and $(c)$
The speed of the particle decreases when $|a| < |a|$
The displacement $x$ of a particle varies with time $t$ as $x = a{e^{ - \alpha t}} + b{e^{\beta t}}$ , where $a, b, \alpha$ and $\beta $ are positive constants. The velocity of the particle will
The positions of two cars $A$ and $B$ are $X_A = at + bt^2,$ $X_B = ft -t^2$ At what time Both cars will have same velocity
The displacement of a particle as a function of time is shown in Figure. It indicates :-
Let $v$ and $a$ denote the velocity and acceleration respectively of a body
A bus is moving with a velocity $10 \,m/s$ on a straight road. A scooterist wishes to overtake the bus in $100\, s$. If the bus is at a distance of $1 \,km$ from the scooterist, with what velocity should the scooterist chase the bus......... $m/s$