What are the answers to question 2 A car moves along a large circular track at s

Question

What are the answers to question 2 A car moves along a large circular track at steady rate of 25 miles per hour. Which of the following quantities are CONSTANT Bob throws a ball through the air to his friend. The ball follows a parabolic are, as shown below. At the top of the arc (the highest point in the ball's path), which of the following quantities are equal to ZERO Bob drop a ball vertically from height h. It falls to the floor and bounces back up to a height is less than h. Briefly explain, using the concept of energy, why the final height is less than the initial height (i.e. what has happened to the "missing energy?") Consider the two identical masses shown below. The both begin at the same height h measured from the ground. Each moves from initial position to final position along its own path, shown by the arrows. Consider the work done on each mass by earth's gravitational force. Is the work on Mass A greater than, less than, or equal to the work done on mass B? Briefly explain.

Explanation / Answer

at the top of the arc y component of acceleration, y component of force and x component of velocity is not zero.

at top below quantities are zero

option a

y component of velocity

option d

x component of balls acceleration

option f

X component of net force on ball

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