Motion in 1D and 2D, projectile motion and relative motion.
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Q1 · Kinematics · HARD
The angular velocity of Earth's rotation is approximately:
Q2 · Kinematics · EASY
A satellite orbits Earth with a constant speed of 7.8 km/s. Its acceleration is:
Q3 · Kinematics · MEDIUM
A meteor enters Earth's atmosphere with an initial velocity of 20 km/s at an angle of 30° to the horizontal. What is the horizontal component of its initial velocity?
Q4 · Kinematics · MEDIUM
A celestial body is observed to move with position given by x = 4t² + 3t + 2 meters, where t is in seconds. What is the instantaneous velocity at t = 3 seconds?
Q5 · Kinematics · EASY
A star exhibits proper motion of 0.5 arcseconds per year. If observed for 8 years, what is the total angular displacement?