component of gravity down slope = 9.81 sin 30 = .5(9.81)
F = m a
m (.5)(9.81) = m a
a = 9.81/2 = 4.9 m/s^2 approx
after 3
v = a t = 4.9*3 = 14.7 m/s
An crate weighing 510 N is resting on a plane inclined 30° above the horizontal.
(a) Calculate the magnitude of the acceleration (ignore friction).
m/s2
(b) After 3.00 s, how fast will the crate be moving?
1 answer