A car moving with a velocity of 10 ,m/s can be stopped by application of a constant force F in a dis

English

Gujarati

Hindi

2.Motion in Straight Line

medium

A car moving with a velocity of $10 \,m/s$ can be stopped by the application of a constant force $F$ in a distance of $20\, m$. If the velocity of the car is $30\, m/s$, it can be stopped by this force in......$m$

A$6.67$

B$20 $

C$60 $

D$180$

Solution

(d) $S \propto {u^2}$.
If $u$ becomes $3$ times then $S$ will become $9$ times
i.e. $9 \times 20 = 180\,m$

Standard 11

Physics

Share

Similar Questions

$Assertion$ : A body with constant acceleration always moves along a straight line.
$Reason$ : A body with constant acceleration may not speed up.

easy

(AIIMS-1998)

A body travels $102.5 \ m$ in ${n}^{\text {th }}$ second and $115.0 \mathrm{~m}$ in $(n+2)^{\text {th }}$ second. The acceleration is :

hard

(JEE MAIN-2024)

Two trains travelling on the same track are approaching each other with equal speeds of $40\ m/s$ . The drivers of the trains begin to decelerate simultaneously when they are just $2.0\ km$ apart. Assuming the decelerations to be uniform and equal, the value of the deceleration to barely avoid collision should be……….$m/s^2$

medium

Derive the equations of uniformly accelerated motion by graphical method.

hard

An object accelerates from rest to a velocity $27.5 \,m/s$ in $10 \,sec$ then find distance covered by object in next $10\, sec$……..$m$

medium