जब वायु प्रतिरोध को नगण्य मान लिया जाता है, तो उड़ान के दौरान किसी प्रक्षेप्य (projectile) पर कार्य करने वाला एकमात्र बल ______ होता है, जिसके कारण निरंतर नीचे की ओर त्वरण होता है।

Which of the following forces is/are responsible for the sedimentation of particles during centrifugation?

Which of the following forces always opposes the applied motion or force?

Statement: An object of mass M falls freely under gravity, maintaining a constant acceleration. Conclusion I: The velocity of the object increases uniformly with time. Conclusion II: The acceleration of the object depends on its mass. Choose the correct option: