Have a query? Ask a Tutor!!

Access to best educators and exclusive paper discussions

Offsite Campus Turito Championship

Can’t find what you’re looking for?

Our tutors are from top schools around the world, and they are waiting for you 24/7, anytime, anywhere.

Homework- One to One Solutions
Understand concepts to solve better
Get your doubts solved instantly

Physics-

General

Easy

Question

Two cars $A blank a n d blank B$ are travelling in the same direction with velocities $v subscript 1 end subscript blank a n d blank v subscript 2 end subscript open parentheses v subscript 1 end subscript greater than v subscript 2 end subscript close parentheses.$ When the car $A$ is at a distance $d$ behind the car $B comma$ the driver of the car $A$ applies the brake producing uniform retardation, $a.$ There will be no collision when

$d < (\frac{v_{1} - v_{2}}{2 a})$
$d > \frac{v_{1}^{2} - v_{2}^{2}}{2 a}$
$d > \frac{{(v_{1} - v_{2})}^{2}}{2 a}$
$d < \frac{v_{1}^{2} - v_{2}^{2}}{2 a}$

The correct answer is: $d greater than fraction numerator open parentheses v subscript 1 end subscript minus v subscript 2 end subscript close parentheses to the power of 2 end exponent over denominator 2 a end fraction$

For same direction relative velocity $equals open vertical bar v subscript 1 end subscript minus v subscript 2 end subscript close vertical bar$
Distance covered, $d equals fraction numerator open parentheses v subscript 1 end subscript minus v subscript 2 end subscript close parentheses to the power of 2 end exponent over denominator 2 a end fraction$
For no collision, $d greater than fraction numerator open parentheses v subscript 1 end subscript minus v subscript 2 end subscript close parentheses to the power of 2 end exponent over denominator 2 a end fraction$

Related Questions to study

A boat crosses a river from port $A$ to port $B$ , which are just on the opposite side. The speed of the water is $V subscript W end subscript$ and that of boat is $V subscript B end subscript$ relative to still water. Assume $V subscript B end subscript equals 2 V subscript W end subscript$ . What is the time taken by the boat, if It has to cross the river directly on the $A B$ line

A boat crosses a river from port $A$ to port $B$ , which are just on the opposite side. The speed of the water is $V subscript W end subscript$ and that of boat is $V subscript B end subscript$ relative to still water. Assume $V subscript B end subscript equals 2 V subscript W end subscript$ . What is the time taken by the boat, if It has to cross the river directly on the $A B$ line

Physics-General

A body starts from rest. What is the ratio of the distance travelled by the body during the 4th and 3rd second

A body starts from rest. What is the ratio of the distance travelled by the body during the 4th and 3rd second

Physics-General

Four marbles are dropped from the top of a tower one after the other with an interval of one second. The first one reaches the ground 4 seconds. When the first one reaches the ground the distances between the first and second, the second and third and the third and forth will be respectively

Four marbles are dropped from the top of a tower one after the other with an interval of one second. The first one reaches the ground 4 seconds. When the first one reaches the ground the distances between the first and second, the second and third and the third and forth will be respectively

Physics-General

parallel

The displacement of a particle is given by $y equals a plus b t plus c t to the power of 2 end exponent minus d t to the power of 4 end exponent$ . The initial velocity and acceleration are respectively

The displacement of a particle is given by $y equals a plus b t plus c t to the power of 2 end exponent minus d t to the power of 4 end exponent$ . The initial velocity and acceleration are respectively

Physics-General

A ball is dropped vertically from a height $d$ above the ground. It hits the ground and bounces up vertically to a height $d divided by 2.$ Neglecting subsequent motion and air resistance, its velocity $v$ varies with the height $h blank$ above the ground as

A ball is dropped vertically from a height $d$ above the ground. It hits the ground and bounces up vertically to a height $d divided by 2.$ Neglecting subsequent motion and air resistance, its velocity $v$ varies with the height $h blank$ above the ground as

Physics-General

The three initial and final position of a man on the $x minus$ axis are given as
i) $blank left parenthesis negative 8 m comma blank 7 m right parenthesis$ ii) $left parenthesis 7 m comma blank minus 3 m right parenthesis$ and iii) $left parenthesis negative 7 m comma blank 3 m right parenthesis$
Which pair gives the negative displacement

The three initial and final position of a man on the $x minus$ axis are given as
i) $blank left parenthesis negative 8 m comma blank 7 m right parenthesis$ ii) $left parenthesis 7 m comma blank minus 3 m right parenthesis$ and iii) $left parenthesis negative 7 m comma blank 3 m right parenthesis$
Which pair gives the negative displacement

Physics-General

parallel

A particle moving in a straight line with uniform acceleration is observed to be a distance $a$ from a fixed point initially. It is at distances $b comma c comma d blank$ from the same point after $n comma 2 n comma 3 n$ second. The acceleration of the particle is

A particle moving in a straight line with uniform acceleration is observed to be a distance $a$ from a fixed point initially. It is at distances $b comma c comma d blank$ from the same point after $n comma 2 n comma 3 n$ second. The acceleration of the particle is

Physics-General

An aeroplane files $400 blank m$ north and $300 blank m$ south and then files $1200 blank m$ upwards then net displacement is

An aeroplane files $400 blank m$ north and $300 blank m$ south and then files $1200 blank m$ upwards then net displacement is

Physics-General

Two bodies are thrown simultaneously from a tower with same initial velocity $v subscript 0 end subscript$ : one vertically upwards, the other vertically downwards. The distance between the two bodies after time $t$ is

Two bodies are thrown simultaneously from a tower with same initial velocity $v subscript 0 end subscript$ : one vertically upwards, the other vertically downwards. The distance between the two bodies after time $t$ is

Physics-General

parallel

A particle starting from rest falls from a certain height. Assuming that the value of acceleration due to gravity remains the same throughout motion, its displacement in three successive half second intervals are $S subscript 1 end subscript blank comma S subscript 2 end subscript comma blank S subscript 3 end subscript$ .
Then,

A particle starting from rest falls from a certain height. Assuming that the value of acceleration due to gravity remains the same throughout motion, its displacement in three successive half second intervals are $S subscript 1 end subscript blank comma S subscript 2 end subscript comma blank S subscript 3 end subscript$ .
Then,

Physics-General

Large number of chloroplast are present in which of the following cells?

Large number of chloroplast are present in which of the following cells?

Photosynthesis is maximum in

Photosynthesis is maximum in

parallel

Which of the following is formed during photorespiration?

Which of the following is formed during photorespiration?

Photosynthetic enhancement with flashing light was first observed by

Photosynthetic enhancement with flashing light was first observed by

Aldolase enzyme is present in

Aldolase enzyme is present in

parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.