josmanu235
30.07.2019 •
Physics
If speed is 20ms and distance travelled is 72 km find time taken
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Ответ:
Therefore , time taken = distance travelled upon speed
= 72 * 1000/20
= 3600s
Ответ:
76 seconds
Explanation:
Using the formula t=vf-vo/a, where t=time, vf= final velocity, v0= initial velocity, and a= acceleration, we can solve for your problem.
Plug in known variables...
t=200-10/a
we can solve for a by using the formula F=ma where f=force, m= mass, and a=acceleration and rearranging it to solve for a.
a=F/m
Plug in known variables...
a=250N/100kg
a=2.5m/s^2
Plug in our newly found acceleration of 2.5 m/s^2 into our first equation and solve
t=190/2.5
t=76 seconds