Write down the energy equation in algebraic form and then obtain the final speed v of the marble ball.
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- Keep the track tilted at 7∘∘ with the horizontal, at let the cart roll downwards. The length of the track is 75 cm. Starting from zero speed at the top of the track, what will be the speed of the cart as it reaches the bottom? Write your answer in m/s, and ignore friction. Mass of the cart = 250 grams.In 1953, the US Army field-tested the M65 Atomic Cannon, capable of firing a W9 warhead (364 kg) at a velocity of 333 m/s, whereupon it exploded with energy of 15 kilotons of TNT. A) In the absence of air resistance, what is the optimal angle for firing the shell? Using your answer, how far would the shell travel? Assume the shell was launched and landed at the same height? B) How long was the shell in the air? C) What is the velocity (Magnitute and Direction) of the shell at the top of its trajectory?answer vii) onwards and dont use chatgpt thank you!