Answer: It increased by a factor of 5
Explanation:
Gravitational potential energy
is given by the following formula:

Where:
is the mass of the cylinder (assumed as constant)
is the acceleration due gravity (assumed as constant)
is the height of the cylinder
As we can see,
is directly proportional to
. Hence, if
increases by a factor of 5
increases by a factor of 5, as well.
Potential energy U = mgh
Given h = 123 m,
mg = F = 780 N
Then
U = (123)(780)
= 95940
= 9.59 x 10^4
Answer:
21 miles
Explanation:
3 miles an hour for 7 hours
Its simply 7m*3m/hr=21 miles
Answer:v=2.82 m/s
Explanation:
Given
initial velocity of ball(u)=3.6 m/s
ball rolls a distance(s) of 5 m
ball acceleration 
Velocity of ball when it is intercepted by Korean player




Time = distance/speed
thus = 10/40
which comes to 1/4th of the hour that's 60/4 which is 15 minutes