59m/s
59m/s
29 m/s
Neglecting air resistance, it will be 39.2 m/sec, regardless of the mass of the object. The acceleration due to gravity is 9.8 m/sec2 x 4 seconds = 39. 2 m/sec
Object's mass and acceleration remain constant.Object's speed increases linearly.Object's distance fallen increases exponentially.
29.4
59m/s
29 m/s
Neglecting air resistance, it will be 39.2 m/sec, regardless of the mass of the object. The acceleration due to gravity is 9.8 m/sec2 x 4 seconds = 39. 2 m/sec
Object's mass and acceleration remain constant.Object's speed increases linearly.Object's distance fallen increases exponentially.
(9.8 m/s2)(8 s) = 78.4 m/s
29.4
194fps
Answer: Ignoring air resistance, we know that the speed of a free-falling object is given by: change in speed = (accelearation due to gravity) × (time of fall) and that the distance fallen by an object dropped from rest is given by: distance fallen = 1 2 × (accelearation due to gravity) × (time of fall)2 To solve this problem, we only know the distance fallen. From this, we can figure out the time of the fall, and from that we can figure out the change in speed (starting from zero speed, the change in speed will be the final speed). Putting in 1,000 m in for the distance fallen and 10 m/s2 in for the acceleration due to gravity, and calling the time of the free-fall t, we have: 1, 000 m = 1 2 × (10 m/s2) × t2
29.4 m/s
19.6 meters per second
If an object is in free fall, its speed grows at the rate of 9.8 m/s every second.To find its speed at the end of some period of time, multiplyspeed = (number of seconds after the drop) times (9.8 meters per second2)Since the object is falling, the speed is in the downward direction. Knowing boththe speed and the direction tells you the velocity.
The speed of a falling object keeps changing as it falls. If an object falls 250 feet to the ground and there is no air, then it takes about 4 seconds to fall, and it hits the ground at about 86.5 miles per hour (127 fps). If the object falls through air, then the speed it picks up depends on its weight and shape ... a sailplane falls slower through air than a rock does, but take away the air, and a rock and a feather fall together.