# Answer to Question #40959 in Mechanics | Relativity for alzahra

Question #40959

At t = 0 seconds, a ball is thrown straight upwards from the edge of 50m-high building,

with a velocity of 10 m/s. If there is no air resistance, the ball hits the ground after:

(b) In the expression E=1\2 C (L\T)^2 ,L is measured in meters, t is measured in seconds and

E is measured in (Newton . meter), what is the unit of the symbol C , and what does it

physically represent?

a) Newton.meter; it represents force

b) Kg; it represents mass

c) m/s; it represents speed

d) m/s; it represents velocity

e) None of the above

with a velocity of 10 m/s. If there is no air resistance, the ball hits the ground after:

(b) In the expression E=1\2 C (L\T)^2 ,L is measured in meters, t is measured in seconds and

E is measured in (Newton . meter), what is the unit of the symbol C , and what does it

physically represent?

a) Newton.meter; it represents force

b) Kg; it represents mass

c) m/s; it represents speed

d) m/s; it represents velocity

e) None of the above

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