A particle is projected upwards at 12ms-1 from a point F. How long does it take to return to F
The answer is 2.45 but how do I get that
S=0 u=12 a=-9.8
0= 12xt -1/2x9.8xt^2
I don't know where to go from there
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Physics projectile motion question watch
- Thread Starter
- 23-10-2017 18:02
- 23-10-2017 18:05
We only have one variable left, being t. When we only have one variable left, we try to solve for t. Do you know how we can do this?
- 23-10-2017 18:06
Use the equation v = u + at.
12/9.81 = 1.223...
Because it goes up and then comes back down you multiply by 2
so 1.223... * 2 = 2.446.... or 2.45