Question

A ball is thrown vertically upwards. it returns after 6 seconds.calculate the height and initial velocity.take g =10 m/s

Answer 1

Hey! ✌ ..here is ur answer⬇⬇
t = 6 secs
a = g = -10m/s^2 [Here a would be -10 because it is against gravity]
final velocity (v) =0m/s
1 equation of motion:
v= u+at
0 = u + (-10×6)
0 = u -60
60 = u
Initial velocity =60m/s

Third equation of motion :
2as = v^2 - u^2
2×-10×s = 0 - (60)^2
-20× s = -3600
s = -3600/-20
s = 180m
Height = 180m


#Hope it helped!!