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?