A Ball Is Projected Upward at Time T = 0

question 49

Multiple Choice

A ball is projected upward at time t = 0.0 s, from a point on a roof 90 m above the ground. The ball rises, then falls and strikes the ground. The initial velocity of the ball is 36.2 m/s if air resistance is negligible. The time when the ball strikes the ground is closest to

• A) 9.4 s
• B) 9.0 s
• C) 8.7 s
• D) 9.7 s
• E) 10 s

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The unique positioning and strategy that enable a business to generate greater sales or margins than its competition.

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