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

Byju's Answer

Standard XIII

Physics

1st Equation of Motion

Car A and Car...

Question

Car A and Car B starts from origin with speeds $54$ kmph and $72$ kmph respectively. Both starts from origin at the same time. Find the distance between A and B after $20$ minutes .

54

No worries! We‘ve got your back. Try BYJU‘S free classes today!

30

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

24

No worries! We‘ve got your back. Try BYJU‘S free classes today!

47

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $30$ km
Given $t = 20 m i n = \frac{1}{3} h r$

$X_{A} = v_{1} t = 54 \times \frac{1}{3} = 18 k m$
$Y_{B} = v_{2} t = 72 \times \frac{1}{3} = 24 k m$
Distance between A and B is
$d = \sqrt{X_{A}^{2} + Y_{B}^{2}} = \sqrt{18^{2} + 24^{2}} = 6 \sqrt{3^{2} + 4^{2}} = 30 k m$

Suggest Corrections

Similar questions

Q. Car A and Car B starts from origin with speeds

54

kmph and

72

kmph respectively. Both starts from origin at the same time. Find the distance between A and B after

20

minutes .

A car can travel 25% faster than a train. Both start from point A at the same time and reach point B 50 kms away from A at the same time. On the way, however, the car lost about 25 minutes while stopping at the petrol pump. The speed of the train is:

A train can travel 50% faster than a car. Both start from point A at the same time and reach point B 75 kilometres away from A at the same time. On the way, however, the train lost about 12.5 minutes while stopping at the stations. The speed of the car is

A

and

B

start from the same point and at the same time with speeds

15

kmph and

12

kmph respectively.Find the distance between

A

and

B

after

6

hours if both move in:

(i)

same direction

(i i)

the opposite directions.

The distance between two places P and Q is 42 km. If Mr A starts from P with a uniform speed of 4 kmph towards Q and Mr B starts from Q towards P with some uniform speed, they meet each other after 6 hours. Find the speed of Mr B.

Join BYJU'S Learning Program

Car A and Car B starts from origin with speeds 54 kmph and 72 kmph respectively. Both starts from origin at the same time. Find the distance between A and B after 20 minutes .

The correct option is B 30 kmGiven t=20 min=13hr XA=v1t=54×13=18 km YB=v2t=72×13=24 km Distance between A and B is d=√X2A+Y2B=√182+242=6√32+42=30 km

Car A and Car B starts from origin with speeds $54$ kmph and $72$ kmph respectively. Both starts from origin at the same time. Find the distance between A and B after $20$ minutes .

The correct option is B $30$ km
Given $t = 20 m i n = \frac{1}{3} h r$

$X_{A} = v_{1} t = 54 \times \frac{1}{3} = 18 k m$
$Y_{B} = v_{2} t = 72 \times \frac{1}{3} = 24 k m$
Distance between A and B is
$d = \sqrt{X_{A}^{2} + Y_{B}^{2}} = \sqrt{18^{2} + 24^{2}} = 6 \sqrt{3^{2} + 4^{2}} = 30 k m$