Ignoring the air resistance it will take about 3 seconds for the object to reach the ground.We know that the acceleration due to gravity is 10m/s2.
We also know that the final velocity is 30 m/s while the initial velocity is 0 m/s
we can use the formulae for acceleration to calculate the time taken/
(final - initial velocity)/timetaken=10
(30-0)/timetaken=10
timetaken =30/10=3 seconds
Answer:
I think it is the 3 option
5.4 x 1014Hz
wavelength x frequency = the speed of light
Mass of a sample of gas doesn't change, no matter what happens to its pressure, volume, or temperature.
