A stone released from the top of a building takes 3s to reach the ground.the air resistance is ignored.
a)What is it's final velocity?
b)How tall is the building?
Answers
Answered by
3
Answer:
b)height of building is 30m
Explanation:
because accleration due to gravity is nearly 10m/s so and it took 3 sec so distance=speed*time
10m/sec*3sec=30m
final velocity is 10 m/sor can be considered as 9.8m/s
Answered by
2
Answer:
v= u+at
= 0+ 10x 3= 30 m/s
h= ut + 1/2 a t^2
= 0 + 1/2 x 10x 3x3=
= 45 meter
Explanation:
Similar questions