lomework 02 Begin Date: 831/2018 500.00 PM-Due Date: 9/7/2018 5.0000 PM End Date

Question

lomework 02 Begin Date: 831/2018 500.00 PM-Due Date: 9/7/2018 5.0000 PM End Date: 9/11 (11%) Problem 9: A quarter is dropped fern that s 275 m this problem use a coordinate system in which up is positive from a hot air balloon that is 275 m above the ground and rising vertically at 9.5m/s For for 25% Part (a) Find the maxmum height.meters, that the quarter attains ompleted | |- mpleted mpleted.I ompleted 25% Part (b) Find its height above the greed,B netes, 4 00 after being released 25% Part (c) Find its velocity, in meter, per second, 4 00 s after beng released 25% Part (d) Fndthetme,insecondathat it takes the quarter to hit the ground ompleted cotan) asinaco) atano acotanOsinhO tanbO coranhD . Degrees Radians 5 6 7 8 0

Explanation / Answer

v^2 = u^2 + 2as

at maximum height v =0

0 = 9.5^2 + 2 * -9.8*s = 0

s = 4.6046 m

so maximum height = 275 + 4.6046m = 279.6046 m

part b )

after 4second

s = so+ut+at^2/2

so = 275 m

u = 9.5 m/s

t = 4s

s = 275 + 9.5*4 -9.8*4^2/2

s = 234.6 m

part c )

v = u + at

v = 9.5 - 9.8*4

v = -29.7 m/s

part d )

when hit the ground

s = so+ut +at^2/2

s = 0

0 = 275 + 9.5t - 4.9t^2

t = 8.523 s

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