JEE PHYSICS MCQ: MOTION IN PLANE

1 Easy

1 of 1

Application +4 | -1

Train

A

is moving along two parallel rail tracks towards north with speed

72 \mathrm{~km} / \mathrm{h}

and train

B

is moving towards south with speed

108 \mathrm{~km} / \mathrm{h}

. Velocity of train

B

with respect to

A

and velocity of ground with respect to

B

are (in

\mathrm{ms}^{-1}

)

View answer and explanation

Correct option: C

-50 and 30

Option C ( -50 and 30) is correct because it correctly calculates the relative velocities using vector subtraction.

More Questions from MOTION IN PLANE

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\mathrm{\vec P} = \mathrm{\vec A} + \mathrm{\vec B}\,\,\mathrm{and}\,P = A + B.

\mathrm{\vec A}\,and\,\mathrm{\vec B}

0^{\circ}

90^{\circ}

\mathrm{If}\,(\mathbf{a}+3 \mathbf{b}) \cdot(7 \mathbf{a}-5 \mathbf{b})=0

(\mathbf{a}-4 \mathbf{b}) \cdot(7 \mathbf{a}-2 \mathbf{b})=0

\mathbf{a}

\mathbf{b}

\theta

\left(90^{\circ}-\theta\right)

39.2 \mathrm{~ms}^{-1}

50 \mathrm{~m}

{g}=9.8 \mathrm{~ms}^{-2}