Answer:
1) ironing a shirt 2) writing on surfaces 3) working of an eraser
light speed in vacuum = 3.8 * 10^8
Distance (Given) = 3.5 ft
now, time = distance/speed = 3.50 / 3.8 * 10^8 = 9.21 * 10^-9 s = 9.21 nanoseconds
So, your answer is 9.21 nano-seconds...
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If I’m understanding this. Th reason why the ball can resist gravity’s pull is because the force used to throw it up was greater than gravity’s pull on it. BTW, gravity’s pull is 9.8m/s. So it would have to be greater than that
Speed = 11000 m/s = 11km/s
D = 380000 km,
t = D/s = 380000 km/ 11km/s
t = 34 545.45 seconds.
