Physics, 25.10.2019 02:43 hdkdkdbx

Asteel ball is dropped from a diving platform from rest. given that g = 9.8 m/s? ,
(a) what is the velocity of the ball 0.6 seconds after its release?
(b) what is the velocity of the ball 1.2 seconds after its release?
(c) through what distance does the ball fall in the first 0.6 seconds of its flight?
(d) how far does it fall in the first 1.2 seconds of its flight?

Answers: 1

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Answers

Answer from: dlatricewilcoxp0tsdw

a) v = 5.88 m/s

b) v = 11.76 m/s

c) s = 1.764 m

d) s = 7.056 m

Explanation:

Given,

The initial velocity of the steel ball, u = o

The acceleration due to gravity, g = 9.8 m/s²

The equations of motion to find the final velocity for a body under free fall with an initial velocity, u = 0 is

v = u + at m/s

v = at m/s

a) At time t = 0.6 s

v = 9.8 x 0.6

= 5.88 m/s

The velocity of the ball 0.6 seconds after its release is, v = 5.88 m/s

b) At t = 1.2 s

v = 9.8 x 1.2

= 11.76 m/s

The velocity of the ball 1.2 seconds after its release is, v = 11.76 m/s

The distance traveled by the free falling body is given by the formula

s = ut + 1/2 at² m

s = 1/2 at² ∵ u = 0

c) At, t = 0.6 s

s = 1/2 x 9.8 x 0.6²

= 1.764 m

The distance ball fall in the first 0.6 seconds of its flight is, s = 1.764 m

d) At, t = 1.2 s

s = 1/2 x 9.8 x 1.2²

= 7.056 m

The distance ball fall in the first 1.2 seconds of its flight is, s = 7.056 m

Answer from: Quest

The low lands i believe

Answer from: Quest

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me

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Asteel ball is dropped from a diving platform from rest. given that g = 9.8 m/s? ,
(a) what is...

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