Newton's laws, friction and circular dynamics.
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Q1 · Laws of Motion · HARD
Two stars of masses M and 2M are separated by a distance d. The position of their center of mass from the star of mass M is:
Q2 · Laws of Motion · MEDIUM
A rocket of mass 1000 kg ejects gas at a rate of 10 kg/s with an exhaust velocity of 3000 m/s. The thrust produced is:
Q3 · Laws of Motion · EASY
A spacecraft in deep space fires its thruster. According to Newton's third law, the force on the spacecraft is: