Physics, 14.09.2019 03:30 amirasaleh1012
Aparachutist falls 50.0 m without friction. when the parachute opens, he slows down at a rate of 61 m/s^2. if he reaches the ground with a speed of 17 m/s, how long was he in the air (in seconds)?
Answers: 3
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Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)
Answers: 3
Aparachutist falls 50.0 m without friction. when the parachute opens, he slows down at a rate of 61...
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