Estimate the average force exerted by a shot-putter on a 7kg shot if the shot is...

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Estimate the average force exerted by a shot-putter on a 7kg shot if the shot is...

Estimate the average force exerted by a shot-putter on a 7kg shot if the shot is moved through a distance of 2.6m and is released with a speed of 10m/s

science physics

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Answer 1

Answer #1

initial velocity v_i=10m/sec

final velocity v_f=0m/sec

s=2.6m

thus by equation of motion

v_f²-v_i²=2as

|a|=v_i²/2s= 19.23m/sec²

now by newton's second law

F=ma= 7kgx19.23m/sec²=134.61N

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Answer 2

Answer #2

time taken to travel = 2.6/10 = .26sec

force = Ma = 7*10/.26 = 269.23N

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Answer 3

Answer #3

v^2-u^2=2*a8s

100=2*a*2.6

a=1.923m/s^2

f=m*a

=7*1.923=13.461 newtons

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Answer 4

Answer #4

w = change in K.E ...

F*s = (1/2)*m*(v^2)...
F = (1/2)*m*u^2/s....
F = 134.6 N

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Answer 5

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