Physics, 08.01.2020 03:31, josmanu235

a ball is thrown vertically into the air and when it returns after an interval of 2 seconds, it is caught. which one of the following statements is true if the acceleration due to gravity is 10 m/s/s and air resistance can be neglected?

a. the acceleration at the top of its flight is 10 m/s/s upwards.
b. the acceleration at the top of its flight is 0 m/s/s.
c. the time taken for the descending motion does not equal the time taken for the ascending motion.
d. the acceleration after it leaves the hand is 10 m/s/s downwards.

Answers: 2

Show answers

Other questions on the subject: Physics

Physics, 21.06.2019 23:20, ElizabethF

Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.

Answers: 3

continue

Physics, 22.06.2019 00:30, Solany6426

Part f - example: finding two forces (part i) two dimensional dynamics often involves solving for two unknown quantities in two separate equations describing the total force. the block in (figure 1) has a mass m=10kg and is being pulled by a force f on a table with coefficient of static friction îľs=0.3. four forces act on it: the applied force f (directed î¸=30â above the horizontal). the force of gravity fg=mg (directly down, where g=9.8m/s2). the normal force n (directly up). the force of static friction fs (directly left, opposing any potential motion). if we want to find the size of the force necessary to just barely overcome static friction (in which case fs=îľsn), we use the condition that the sum of the forces in both directions must be 0. using some basic trigonometry, we can write this condition out for the forces in both the horizontal and vertical directions, respectively, as: fcosî¸â’îľsn=0 fsinî¸+nâ’mg=0 in order to find the magnitude of force f, we have to solve a system of two equations with both f and the normal force n unknown. use the methods we have learned to find an expression for f in terms of m, g, î¸, and îľs (no n).

Answers: 2

continue

Physics, 22.06.2019 05:50, ladyty2109

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b. refraction c. diffraction d. interference

Answers: 1

continue

Physics, 22.06.2019 09:00, celestemaria0727

For which pair of objects would adding the same a

Answers: 1

continue

Do you know the correct answer?

a ball is thrown vertically into the air and when it returns after an interval of 2 seconds, it is c...