JEE Main Physics question
A cart is moving horizontally along a straight line with constant speed 30 m/s. A projectile is to be fired from the moving cart in such a way that it will return to the cart after the cart has moved 80 m. At what speed (relative to the cart) must the projectile be fired? (take m/s²)
Answer: (B)
Solution
Time for the cart to move 80 m: s. Firing the projectile vertically relative to the cart (so
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