SATHEE: Kinematics Question 311

Kinematics Question 311

Question: A boat it’s sent across a river with a velocity of 8 km/hr. If the resultant velocity of boat it’s 10 km/hr, then velocity of the river it’s: [Pb. PET 2004]

Options:

A) 10 km/hr

B) 8 km/hr

C) 6 km/hr

D) 4 km/hr

Show Answer

Answer:

Correct Answer: C

Solution:

Given $\vec{A B} =$ Velocity of boat= 8 km/hr $\vec{A C} =$ Resultant velocity of boat = 10 km/hr $\vec{B C} =$ Velocity of river $= \sqrt{A C^{2} - A B^{2}}$

$= \sqrt{{(10)}^{2} - {(8)}^{2}} = 6 k m / h r$

Kinematics Question 311

Question: A boat it’s sent across a river with a velocity of 8 km/hr. If the resultant velocity of boat it’s 10 km/hr, then velocity of the river it’s: [Pb. PET 2004]

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Kinematics Question 311

Question: A boat it’s sent across a river with a velocity of 8 km/hr. If the resultant velocity of boat it’s 10 km/hr, then velocity of the river it’s: [Pb. PET 2004]

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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