round answer to the nearest tens
asked Jun 12 in Pre-Algebra Answers by Lexi

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

The only force acting on the phone is gravity, which causes all objects to fall at the same rate (neglecting air resistance). The magnitude of this is 32 feet per second per second approx. That means, that for every second of fall the speed increases by 32 ft/sec. the phone starts from rest, zero velocity. After t seconds its speed increases to 32t ft per second. Its average speed is (0+32t)/2=16t. The distance it falls in time t is speed times time = 16t×t=16t² so if t is the time it takes to reach the ground 350=16t². And t=√(350/16)=4.7 seconds approx.

answered Jun 13 by Rod Top Rated User (545,980 points)

Related questions

Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
81,126 questions
85,200 answers
2,143 comments
68,618 users