Monday

April 21, 2014

April 21, 2014

Posted by **PLEASE HELP ME!** on Friday, April 19, 2013 at 6:06pm.

s(t) = 189t − t^3, where " is measured in metres.

a) What is the velocity of the shuttle at touchdown?

b) How much time is required for the shuttle to stop completely?

c) How far does the shuttle travel from touchdown to a complete stop?

d) What is the deceleration 8 seconds after touchdown?

- calculus (gr 12) -
**Elena**, Saturday, April 20, 2013 at 3:04pms= 189t- t³

v=ds/dt = 189-3t²

t=0 = > v=189 m/s.

189-3t² = 0

t=√(189/3) =√63 = 7.94 s.

s=189 t- t³=

=189(7.94) -7.94³=1000.1 m

a=dv/dt =d(189-3t²)/dt= - 6t

t=8 => a= - 6•8 = - 48 m/s²

**Related Questions**

calculus (gr 12) - The forward motion of a space shuttle, t seconds after ...

calculus (gr 12) - The forward motion of a space shuttle, t seconds after ...

Grade 12 Calculus - 6. The forward motion of a space shuttle, t seconds after ...

Grade 12 Calculus - The forward motion of a space shuttle, t seconds after ...

calculus - 6. The forward motion of a space shuttle, t seconds after touchdown, ...

Physics - The space shuttle has a weight 2.00 x 10^7 N. The shuttle is ...

Math - Radius of earth 3,959 miles Space shuttle orbits 200 miles above earths ...

Math - Radius of earth 3,959 miles Space shuttle orbits 200 miles above earths ...

Science - An astronaut on a space walk bumps the shuttle and starts moving away ...

science - An astronaut on a space walk bumps the shuttle and starts moving away ...