Since there is no air, there is no air resistance so acceleration of free-fall is constant throughout the fall. Thus the first of the four equations of motion can be used.
v = u + at
where v = final velocity, u = initial velocity, a = constant acceleration, t = time of motion
v = 0 + (9.8 m/sec/sec)(2 sec) = 19.6 meters per second.
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Speed = (acceleration) x (time)
Acceleration of a dropped rock = gravity = 9.8 m/s2
Speed = (9.8) x (2) = 19.6 m/sec
19.6 meters / 64.4 ft
the answer is 24-9 m/sec. yuor welcome
176.4 meters
Acceleration of the arrow is -3m/s2A = (velocity minus initial velocity) / time
If the ball was dropped from a roof and hit the ground 3.03 seconds later, then when it hit the groundits velocity was 29.694 meters (97.42 feet) per second (rounded) downward.
19.6 meters / 64.4 ft
That depends on how long it's been falling altogether. If it was just dropped at the beginning of the 2.56 seconds, and it's only been falling for 2.56 seconds altogether, then it has fallen 32.1 meters (105.3 feet). (rounded) If it was falling for some time before the 2.56 seconds began, then it fell farther. A falling object keeps falling faster and faster as time goes on.
the answer is 24-9 m/sec. yuor welcome
The hammer will take square-root(2x80/9.8)= 4.04 seconds to hit the ground. The distance is related to the time by s=v0t + 1/2 gt^2 where vo, the initial velocity is=0. The answer is 4.04 or rounded is 4 seconds.
So? Whats the question? _______________________________ It doesn't matter what it is (well, if we ignore air resistance), in Earth's gravity the object will accelerate at 9.8 meters per second per second. Dropped from an altitude H, you can use the formula =(2/9.8*H)^0.5 to calculate the time it takes (in seconds) to the ground. In the absence of air resistance, it will take 0.808 seconds to fall. The speed of the falling object at any moment can be calculated as the time multiplied by 9.8 meters per second per second. In the absence of air resistance, the laundry bag will be falling at a speed of 7.9 meters per second when it hits.
19.6 meters per second
4 Seconds
Acceleration occurs when velocity changes over time. The formula for it is as follows: a = (Vf - Vi) / t a: acceleration (meters/seconds2) Vf: Final velocity (meters/seconds) Vi: Initial Velocity (meters/seconds) t: Time (seconds)
No
176.4 meters
78.46 meters (257.4 feet)
The acceleration of gravity is 9.8 meters/sec2.In 1.5 seconds after it's dropped, any object is falling at (9.8 x 2) = 19.6 meters/sec.The mass of the rock makes no difference.