Let h = the distance from the edge of the wall to the water surface (m).
Use g = 9.8 m/s² and neglect air resistance.
The initial vertical velocity of the pebble is zero.
Because the pebble hits the surface of the water after 1.5 s, therefore
h = (1/2)*(9.8 m/s²)*(1.5 s)² = 11.025 m
Answer: 11.025 m
Answer:
Here gravitational force is G or gravity constant.
here we will use the torque balance about the knee joint
here we can say that
here torque due to weight is given as
now torque due to applied force of muscle
now by torque balance we will have
so here the magnitude of m will be 173 N
If you look at the chart you see that there are 6 kids that spend 4-5 hours on the internet out of a total of 15 so it can be put into a fraction like this: 6/15 if you divide this fraction you will get the decimal form: 0.4 multiply this number by 100 and you get the percent: 40%
