While you are traveling in a car on a straight road at $90 k m / h$ , another car passes you in the same direction; its speedometer reads $120 k m / h$ . What is your velocity relative to the other driver? (in km/h)

30

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

210

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

- 210

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

Open in App

Solution

The correct option is B $- 30$
Velocity of our car A $v_{A} = 90 k m / h$
Velocity of another car B $v_{B} = 120 k m / h$
Relative velocity of car A w.r.t car B $v_{A B} = v_{A} - v_{B}$
$⟹ v_{A B} = 90 - 120 = - 30 k m / h$

Suggest Corrections

Similar questions

90 km/h

120 km/h

If you are walking at constant velocity of 8 km/h and a car passed you by at the speed of 20

km/h from behind, what is the car's velocity from your viewpoint?

40 k m / h

P

R

If car A is at 40 km/h and car B is at 10 km/h in the opposite direction, what is the velocity of

the car A relative to the car B?

Join BYJU'S Learning Program