Space Problems
3 posters
HSC-Physics :: Space
Page 1 of 1
Acceleration question
this is my question:
An astronaut is standing on Mars. The astronaut throws an object of mass 0.30kg vertically upward at an initial speed of 9.0 m/s. It reaches a maximum height of 11m. What is the magnitude of the acceleration?
An astronaut is standing on Mars. The astronaut throws an object of mass 0.30kg vertically upward at an initial speed of 9.0 m/s. It reaches a maximum height of 11m. What is the magnitude of the acceleration?
roy_534- Posts : 2
Join date : 2011-08-11
Acceleration question
also i dont get what the mass has to do with it. do i need to use newton's gravity equation?
roy_534- Posts : 2
Join date : 2011-08-11
Acceleration Question
the mass is irrelevant in this case
you need to use the equation v^2 = u^2 + 2ar
when the ball gets 11m off the surface (r = 11), its vertical velocity is 0 (v = 0).
hence 0 = 9^2 + 2 x a x 11
so you get a = -3.7 (to 2 sig figs cause that is the least amount given in the question)
hope that helped!
you need to use the equation v^2 = u^2 + 2ar
when the ball gets 11m off the surface (r = 11), its vertical velocity is 0 (v = 0).
hence 0 = 9^2 + 2 x a x 11
so you get a = -3.7 (to 2 sig figs cause that is the least amount given in the question)
hope that helped!
mockingbird2- Posts : 1
Join date : 2011-08-11
Similar topics
» Astrophysics Problems
» Age of Silicon Problems
» Geophysics Problems
» Quanta to Quarks Problems
» Ideas to Implementation Problems
» Age of Silicon Problems
» Geophysics Problems
» Quanta to Quarks Problems
» Ideas to Implementation Problems
HSC-Physics :: Space
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum
|
|