Answer:
Acceleration due to gravity 9.8 m/s^2
Explanation:
When an object drops down towards earth from certain height than it comes down with an acceleration of 9.8 m/s^2 which is constant throughout the dropping until the falling objects hits the ground and coming to rest.
A. is the answer for this question
Answer:
1600 years half life
3200/1600 is 2 half lifes
first half life takes the sample to 1/2 it's original amount and the second takes it to 1/4 of it's original amount
so 1/4*7gm is 1.75gm
Explanation:
Answer:
7.6427m/s
Explanation:
Given:
#Applying the conservation of momentum along the x-axis:
#And along y-axis:
#Solving for :
#By substitution in the x-axis equation:
Hence the original speed of the ball before impact is 7.6427m/s
When the wheels of the skateboard get stuck in the crack of the sidewalk, the riders inertia will continue forward and cause him to fall off/down.