Advertisements
Advertisements
प्रश्न
A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is,
पर्याय
`"u"/"g"`
`"u"^2/(2"g")`
`"u"^2/"g"`
`"u"/(2"g")`
उत्तर
`"u"^2/(2"g")`
At highest point, v = 0
Using v2– u2 = 2as, we get
0 − u2 = 2(−g)h ( ∵ a = −g and s = h)
or h = `"u"^2/(2"g")`
APPEARS IN
संबंधित प्रश्न
When will you say a body is at non-uniform acceleration?
Name the physical quantity whose SI unit is :
(a) m/s (b) m/s2
Fill in the following blank with suitable word :
Velocity is the rate of change of……………………… It is measured in.............. .
Explain the meaning of the following equation of motion :v = u + at, where symbols have their usual meanings.
Derive the formula s= `ut+1/2at^2` , where the symbols have usual meanings.
A car is travelling along the road at 8 ms-1. It accelerates at 1 ms-2 for a distance of 18 m. How fast is it then travelling ?
A boy is sitting on a merry-go-round which is moving with a constant speed of 10 m s−1. This means that the boy is :
For a uniformly retarded motion, the velocity-time graph is _____________
Derive the following equations for uniformly accelerated motion:
(i) v = u + at
(ii) `"S = ut" + 1/2 "at"^2`
(iii) v2 = u2 + 2aS
where the symbols have their usual meanings.
Area under a v – t graph represents a physical quantity which has the unit
