AIPMT | 2015Basic Maths and Units and DimensionsHard
Question
A ship A is moving Westwards with a speed of 10 km h-1 and a ship B 100 km South of A, is moving Northwards with a speed of 10 km h-1. The time after which the distance between them becomes shortest, is :-
Options
A.5h
B.5√2 h
C.10√2 h
D.0 h
Solution
= 10√2 kmphdistance OB = 100 cos45o = 50√5 km
Time taken to reach the shortest distance between
A & B =
tsn = 5 hrs.
Hence option (1)
Create a free account to view solution
View Solution FreeTopic: Basic Maths and Units and Dimensions·Practice all Basic Maths and Units and Dimensions questions
More Basic Maths and Units and Dimensions Questions
A uniform thin rod AB of length L has linear mass density μ(x) = a + , where x is measured from A. If the CM of the...Density of wood is 0.5 gm/ cc in the CGS system of units. The corresponding value in MKS units is...A force F is given by F = at + bt2, where t is time. The dimension of a and b are...A chain of length L and mass m is placed on a smooth surface. The length of BA is (L - b). calculate the velocity of cha...A gas is filled in a cylinder, its temperature is increased by 20% on kelvin scale and volume is reduced by 10%. How muc...