You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard IX

Mathematics

Properties of Measures of Central Tendency

Two cars A an...

Question

Two cars A and B are moving on the straight parallel paths with speeds 36 $k m h^{- 1}$ and 72 $k m h^{- 1}$ , respectively, starting from the same point in the same direction. After 20 min. how much behind is car A from car B?

Open in App

Solution

$V_{r} e l a t i v e = V_{B} - V_{A} = 36 k m / h r$
$∴$ distance between cars in $20 m i n = \frac{1}{3} h r$
is $36 \times \frac{1}{3} = 12 k m$

Suggest Corrections

Similar questions

Q. Two cars are moving in the same direction with a speed of 30

k m h^{- 1}

. They are separated from each other by 5 km. Third car moving in the opposite direction meets the two cars after an interval of 4 minutes. What is the speed of the third car?

Q. Train

A

and train

B

are running on parallel tracks in the opposite directions with speeds of

36 {km h}^{- 1}

and

72 {km h}^{- 1}

, respectively. A person is walking in train

A

in the direction opposite to its motion with a speed of

1.8 {km h}^{- 1}

. The speed

({in ms}^{- 1})

of this person as observed from train

B

will be close to

Q. Two cars

A

and

B

are initially

100 m

apart with

A

behind

B

. Car

A

starts from rest with a constant acceleration

2 m / s^{2}

towards car

B

and at the same instant car

B

starts moving with constant velocity

10 m / s

in the same direction. Time after which car

A

overtakes car

B

is:

Q. Round 1: Car A and Car B start moving in opposite direction to each other from two different points which are 22.4 Km apart. They meet after 2 hours.

Round 2: Car A and Car B start from same point in same direction and after 3 hours, difference of their covered distance becomes 26.4 Km.

Given that speed of both cars remains same in both rounds and speed of car A > speed of car B.

Find the speed of Car A(in Km/hr).

Q. Two cars

A

and

B

are moving in same direction. Car

A

is moving with speed

10 m / s

and at a distance

80 m

behind car

B

which starts from rest and with uniform acceleration

a_{o}

. The maximum value of

a_{o}

for which car

A

can reach car

B

Join BYJU'S Learning Program

Two cars A and B are moving on the straight parallel paths with speeds 36 kmh−1 and 72 kmh−1, respectively, starting from the same point in the same direction. After 20 min. how much behind is car A from car B?

Vrelative=VB−VA=36km/hr∴ distance between cars in 20min=13hris 36×13=12km

Two cars A and B are moving on the straight parallel paths with speeds 36 $k m h^{- 1}$ and 72 $k m h^{- 1}$ , respectively, starting from the same point in the same direction. After 20 min. how much behind is car A from car B?

$V_{r} e l a t i v e = V_{B} - V_{A} = 36 k m / h r$
$∴$ distance between cars in $20 m i n = \frac{1}{3} h r$
is $36 \times \frac{1}{3} = 12 k m$