Skip to main content
MediumPhysicsrelative velocity
+4 / -1
A 2 m wide truck is moving with a uniform speed v₀ = 8 m/s along a straight horizontal road. A pedestrian starts to cross the road with a uniform speed v when the truck is 4 m away from him. The minimum value of v so that he can cross the road safely is
A

m/s

B

m/s

C

m/s

D

m/s

Previous

A particle moves in xy plane. The position vector of particle at any time t is =

Next

A particle moves in space along the path z = ax³ + by² in such a way that = = c,

More from relative velocity
Easy

A ship is travelling due west at 40 km/h. Another ship has velocity 40 km/h 30° north to west w.r.t.

Easy

Figure shows a quarter circle. A particle moves from B to O with 5 m/s, from O to A with 7 m/s. With

Medium

Two particles A and B are located in xy plane at points (0, 0) and (0, 4) m. They simultaneously sta

Easy

A man is running with velocity 20 km h⁻¹ towards west and rain is falling vertically down with 10 m

Medium

A man at rest observes the rain falling vertically. When he walks at 4 km/h, he has to hold his umbr

Easy

A swimmer’s speed in the direction of flow of river as seen by observer on ground is 16 km/h. Swimme

Practice Physics Exams

Full-length mock tests with detailed analytics, rank, and percentile.

Browse Exams