3. Arthur Compton throws a javelin (5kg) straight up in the air. Ignore air resistance. a....

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3. Arthur Compton throws a javelin (5kg) straight up in the air. Ignore air resistance. a. If the javelin reaches a maximum height of 40m above the throw point what was its initial speed? b. Arthur uses 3kJ of chemical energy to throw the Javelin. What is the efficiency of the energy conversion from chemical to mechanical? When Arthur throws it at the same initial speed a second time, a strong gust of wind applies a horizontal force of 50N[E] causing the javelin to displace 10m to the East. What speed would it now hit the ground at? (1T, 4K, 2A) 3. Arthur Compton throws a javelin (5kg) straight up in the air. Ignore air resistance. a. If the javelin reaches a maximum height of 40m above the throw point what was its initial speed? b. Arthur uses 3kJ of chemical energy to throw the Javelin. What is the efficiency of the energy conversion from chemical to mechanical? When Arthur throws it at the same initial speed a second time, a strong gust of wind applies a horizontal force of 50N[E] causing the javelin to displace 10m to the East. What speed would it now hit the ground at? (1T, 4K, 2A)