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0 votes
0 answers
3k views

On a rainy day, a man is running on a hilly terrain in such a way that he is always finding the rain drops hitting him vertically

It is assumed that rainfall is uniform in the whole terrain from O to E(figure attached) When the man was at rest on stretch OA, he found the rainfall at an angle of $30^o $ with the vertical. What ...
Prajwal Tiwari's user avatar
1 vote
1 answer
40 views

Why do we say the resultant vector as the relative motion in this case?

If a car A moves with acceleration $2m/s^2 $due east and car B moves $1m/s^2 $due north. What would be the acceleration of car B with respect to car A. Now , for this. The solution in my textbook is ...
S.M.T's user avatar
  • 294
0 votes
3 answers
133 views

Question regarding relative velocity of muzzle bullet? [closed]

A police jeep is chasing with, velocity of 45 km/h a thief in another jeep moving with velocity 153 km/h. Police fires a bullet with muzzle velocity of 180 m/s. The velocity it will strike the car of ...
Srijan's user avatar
  • 725
-1 votes
1 answer
52 views

Why is direction of train like this for car?

This is an image of a train and a car. T is the train moving towards - $x$ axis and C is the car moving towards $+ y$axis. So, my teacher made a resultant velocity with $-5\hat i$ and $-20\hat j$. ...
Srijan's user avatar
  • 725
-1 votes
2 answers
40 views

Is this correct regarding velocity of train?

So many yellow T drawn are just different position of train at different instants.The person is standing still at all those instants at one place. If a train is moving at 5m/s. Then for me , can we ...
Srijan's user avatar
  • 725
0 votes
1 answer
38 views

Direction of $V_RM$ confusion

So ,please read both the questions . They have similar originate questions that I am facing difficult in. Let us say rain is falling downwards with v = -5j and a man is moving with a velocity of 2i in ...
Srijan's user avatar
  • 725
2 votes
1 answer
190 views

Relative speed of satellites in different orbits [closed]

The question is "The Hubble Space Telescope is in orbit around the Earth at a height of 560km above the Earth’s surface. Take the radius and mass of the Earth to be 6.4×10^ 6m and 6.0×10^24 kg, ...
planckton's user avatar
  • 163
0 votes
4 answers
95 views

I want to know the difference in two methods I have solved [closed]

A thief is driving away on a straight road in jeep moving with a speed of 9 m/s. A police man chases him on a motorcycle moving at a speed of 10 m/s. If the instantaneous separation of the jeep from ...
user avatar
0 votes
4 answers
282 views

Why does the relative motion go wrong here?

Question statement: A rocket is moving in a gravity free space with a constant acceleration of 2ms−2, along + x direction (see figure). The length of a chamber inside the rocket is 4 m. A ball is ...
imposter's user avatar
  • 1,200
14 votes
0 answers
679 views

Motion of Points around a Triangle [closed]

I came across this problem in the book "Problems in General Physics by IE Irodov"- Three points are located at the vertices of an equilateral triangle whose side equals s. They all start ...
Monster196883's user avatar
-1 votes
2 answers
91 views

Velocity Question from grandparent

My Grandparent asked me this question a few years ago, and I am getting around to giving him an answer, but I don't know the answer. Can anyone help? "A pickup truck is speeding along a highway ...
aTrusty's user avatar
  • 21
0 votes
2 answers
286 views

Change in Kinetic Energy in two different reference frames (one of them non-inertial) [duplicate]

Let's say an object of mass 10 kg is fired from a cart of mass 90 kg. The object and the cart, of total mass 100 kg were initially moving together with a speed of 10 m/s. Then, the object is fired by ...
NewbieCoder's user avatar
1 vote
1 answer
123 views

Why is heat energy dissipation in two intervals frame dependent?

The question asks for heat produced in the given specific conditions. It seems like an application of the work-energy theorem with friction doing work on the block and dissipating the heat in the ...
Schwarz Kugelblitz's user avatar
3 votes
2 answers
1k views

Upstream and downstream problem using relative velocity

On a river coast, there is a port; when a barge passed the port, a motor boat departed from the port to a village at the distance $S_1 = 15$ km downstream. It reached its destination after $t = 45$ ...
Divya Prakash Sinha's user avatar
0 votes
1 answer
489 views

Forces acting on a book on a moving table [closed]

I’m studying for an upcoming physics exam and one of the sample questions essentially boils down to this: a book (not clamped on) is on a table that is moving to the left. Is there a force of static ...
Neel Shejwalkar's user avatar

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