Physics, 17.12.2020 01:00, brianna8739
Compare the collision between two baseballs and a catcher's mitt.
Case A: A baseball pitched at 40 m/s collides with a catcher's mitt and is brought
to a stop. The catcher holds the mitt rather rigidly and retracts backwards very little
as the ball strikes the mitt
Case B: An identical baseball pitched at 40 m/s collides with a catcher's mitt and
is brought to a stop. The catcher holds the mitt with a relaxed arm and retracts
backwards 30 cm as the ball strikes the mitt.
Case A
Case B
Before
After
Before
After
--
Which variable is different for these two cases?
Which Case involves the greatest momentum change?
Which Case involves the greatest impulse?
Which Case involves the greatest force ?
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Answers: 3
Physics, 21.06.2019 22:50, peno211
Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.
Answers: 2
Physics, 22.06.2019 14:30, gabriellam20
A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.
Answers: 1
Compare the collision between two baseballs and a catcher's mitt.
Case A: A baseball pitched at 40...
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