Laws of Motion

JEE Main level, single correct, medium

55 of 210

Question 55 of 210

A satellite moving with velocity vv in a force free space collects stationary interplanetary dust at a rate of dMdt=αv\frac{d M}{d t}=\alpha v where MM is the mass (of satellite + dust) at that instant. The instantaneous acceleration of the satellite is

Show answer and solution

Answer: (B) −αv2M-\frac{\alpha v^2}{M}

ainst =αV2Ma_{\text {inst }}=\frac{\alpha \mathrm{V}^2}{\mathrm{M}}

JEE Main question paper PDF

Open a shift to read the full paper on this page, or download it.

JEE Main 2025 Apr 2 Shift 1 question paper

Open Download PDF

Opening paper…

Explain it as a whiteboard videoStep-by-step, in Hinglish or English. Your first video needs no login.Solved it on paper but got it wrong?Upload a photo of your working. Mistake Doctor marks the exact line that broke.
See it move: Laws of motion, friction and pulleys simulationDrag the sliders and watch the numbers in this question change.

More Physics practice

JEE Main Physics practice question on Laws of Motion (Newton's laws of motion), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.