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A Ferrari covers120m from a standing start in 6sec at constant acceleration.Find its final velocity
(Shilvastar asked this)
u=0 (Since it starts from rest)
a=2 x 120/36=6.67 m/s2
A body is dropped from a tower of height 96 m. Another body is thrown up from the ground after a second with a velocity of 40 m/s.When and where they will meet?
A body is dropped from a tower of height 96 m. Another body is thrown up from the ground after a second with a velocity of 40 m/s. When and where they will meet?
For the first body,
Let S=x (from top)
x=0.5 gt2 ————— (1)
For the second body,
96-x=40 t -0.5 gt2 ———–(2)
(1) + (2) =>
t=96/40 = 2.4 s
x= 0.5 g t2 =28.224 m from top (taking g = 9.8 m/s2)
“what is the distance a rock will fall in 5 seconds inside a well bore?”
and taking u = 0 (if falling from rest)
and g= 10 m/s2
S= 125 m