Question

An object is projected with speed of 4ms at an angle of 60° to horizontal. Calculate the time of flight of the object. (g=10ms2)​

Answer 1

0.8 seconds

Step-by-step explanation:

time of flight = 2u/g

u=4m/s

g=10

= 8/10

= 0.8 sec

just a trial...not sure!!!

Answer 2

Given :

∅ = 60⁰

u = 4 m/s

g = 10m/s²

to find :

T = ?

Solution :

as per formula,

`t = (2u \: sin \theta)/(g)`

now put the value :
`t \: = (2 * 4 * sin \: 60)/(10)`

as we know
`sin60 \: = ( √(3) )/(2)`

therefore,

`t \: = (8 * ( √(3) )/(2) )/(10)`

as we solve this we get,

`t \: = ( 2√(3) )/(5)`

that's t = 0.69 sec

`\sf\fbox\red{\:I \:hope \:it's \:helpful \:to \:you}`