A boy drop a ball from a cliff 122.5 height. find it [a] how long does it take the balll to fall to the ground? [b] how far does it fall in the 3 sec? [c] how fast is it going at the end of 3 sec ?
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This is a question of horizontal projectile
These Formulas be used :
T = √2h/g
R = u √2h/g
v = u + at
T = √2 x 122.5 / 9.8
T = 245/9.8 = 25 seconds
s = 1/2 gt²
s = 9.8 x 9 /2 = 44.1 m
v = u + at
v = at
v = 9.8 x 3 = 29.4 m/s
These Formulas be used :
T = √2h/g
R = u √2h/g
v = u + at
T = √2 x 122.5 / 9.8
T = 245/9.8 = 25 seconds
s = 1/2 gt²
s = 9.8 x 9 /2 = 44.1 m
v = u + at
v = at
v = 9.8 x 3 = 29.4 m/s
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