A paratrooper is initially falling downward at a speed of 29.1 m/s before her parachute opens....
A paratrooper is initially falling downward at a speed of 29.1 m/s before her parachute opens. When it opens, she experiences an upward instantaneous acceleration of 67 m/s2.
(a) If this acceleration remained constant, how much time would
be required to reduce the paratrooper's speed to a safe 5.50 m/s?
(Actually the acceleration is not constant in this case, but the
equations of constant acceleration provide an easy estimate.)
(b) How far does the paratrooper fall during this time
interval?
Homework Answers
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A paratrooper is initially falling downward at a speed of 29.1
m/s before her parachute opens....
A paratrooper is initially falling downward at a speed of 27.9 m/s before her parachute opens....
A paratrooper is initially falling downward at a speed of 27.9 m/s before her parachute opens. When it opens, she experiences an upward instantaneous acceleration of 73 m/s2. (a) If this acceleration remained constant, how much time would be required to reduce the paratrooper's speed to a safe 5.20 m/s? (Actually the acceleration is not constant in this case, but the equations of constant acceleration provide an easy estimate.) (b) How far does the paratrooper fall during this time interval?
2:20 AT&T NIGER A paratrooper is initially falling downward at a speed of 27.5 m/s before...
2:20 AT&T NIGER A paratrooper is initially falling downward at a speed of 27.5 m/s before her parachute opens. When it opens, she experiences an upward instantaneous acceleration of 75.0 m/s2. Part If this acceleration remained constant, how much time would be required to reduce the paratrooper's speed to a safe 5.75 m/s? (Actually the acceleration is not constant in this case, but the equations of constant acceleration provide an easy estimate.) peringe 2:20 AT&T Part How far does the...
hello, if you could help with part 1 and 2, that would be great, thank you!...
hello, if you could help with part 1 and 2, that would be
great, thank you!
A paratrooper is initially falling downward at a speed of 32.0 m/s before her parachute opens. When it opens, she experiences an upward instantaneous acceleration of 75.0 m/s2. LL ament Part 1 If this acceleration remained constant, how much time would be required to reduce the paratrooper's speed to a safe 4.00 m/s? (Actually the acceleration is not constant in this case, but the...
An elevator is initially moving upward at a speed of 13.08 m/s. The elevator experiences a...
An elevator is initially moving upward at a speed of 13.08 m/s. The elevator experiences a constant downward acceleration of magnitude 4.16 m/s2 for 2.79 s. (a) Find the magnitude and direction of the elevator's final velocity. magnitude direction ---Select--- upward downward none (b) How far did it move during the 2.79 s interval?
An elevator is initially moving upward at a speed of 12.60 m/s. The elevator experiences a...
An elevator is initially moving upward at a speed of 12.60 m/s. The elevator experiences a constant downward acceleration of magnitude 3.92 m/s2 for 2.97 s (a) Find the magnitude and direction of the elevator's final velocity. magnitude direction !--Select--# (b) How far did it move during the 2.97 s interval?
While skydiving, your parachute opens and you slow down from 50.0 m/s to 8.00 m/s in...
While skydiving, your parachute opens and you slow down from 50.0 m/s to 8.00 m/s in 0.800 s. (a) Determine the distance you fall while the parachute is opening (b) Determine the magnitude of your acceleration during this time interval (c) Divide the acceleration found in (b) by g-9.80 m/s. Typically, some people feel faint if this exceeds 5 (5 g's). Will you feel faint? (d) What assumptions did you make in solving this problem?
A sky diver jumps from a helicopter and is falling straight down at 30 m/s when...
A sky diver jumps from a helicopter and is falling straight down at 30 m/s when her parachute opens. From then on, her downward acceleration is approximately = g - cv^2, where g = 9.81 m/s^2 and c is a constant. After an initial "transient" period the descends at a nearly constant velocity of 5 m/s. (a) What is the value of c, and what are its 9 units? (b) What maximum deceleration is the sky diver subjected to? (c)...
You throw a ball upward with an initial speed of 3.0 m/s from an initial height...
You throw a ball upward with an initial speed of 3.0 m/s from an initial height of 1.5 m. After you throw the ball, its acceleration is 9.81 m/s2 downward. Taking upward to be the positive direction, write the position-time equation for the ball's motion. Express your answer in terms of t. t is expressed in seconds.
QUESTION 4 A bullet is fired vertically upward, with an initial velocity of 260 m/s a)...
QUESTION 4 A bullet is fired vertically upward, with an initial velocity of 260 m/s a) how high does it go? 1.3449.0 m 2.3384.6 m 3.345.1 m 4.6458.2 m QUESTION 5 A plane moving at 300 km/h lands on an aircraft carrier after rolling to a stop in 205 m. What was the required acceleration for a safe landing? (hint: transform units) 1.16.94 m/s2 2. 83.3 m/s2 3.8.4 m/s2 4.170 m/s2 QUESTION 6 A truck accelerates from 85 km/h to...
A blue ball is thrown upward with an initial speed of 20 m/s, from a height...
A blue ball is thrown upward with an initial speed of 20 m/s, from a height of 0.8 meters above the ground. 2.4 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 5.3 m/s from a height of 22.4 meters above the ground. The force of gravity due to the earth results in the balls each having a constant downward acceleration of 9.81 m/s2. 1) How long after the blue ball...
A paratrooper is initially falling downward at a speed of 27.9 m/s before her parachute opens. When it opens, she experiences an upward instantaneous acceleration of 73 m/s2. (a) If this acceleration remained constant, how much time would be required to reduce the paratrooper's speed to a safe 5.20 m/s? (Actually the acceleration is not constant in this case, but the equations of constant acceleration provide an easy estimate.) (b) How far does the paratrooper fall during this time interval?
2:20 AT&T NIGER A paratrooper is initially falling downward at a speed of 27.5 m/s before her parachute opens. When it opens, she experiences an upward instantaneous acceleration of 75.0 m/s2. Part If this acceleration remained constant, how much time would be required to reduce the paratrooper's speed to a safe 5.75 m/s? (Actually the acceleration is not constant in this case, but the equations of constant acceleration provide an easy estimate.) peringe 2:20 AT&T Part How far does the...
hello, if you could help with part 1 and 2, that would be
great, thank you!
A paratrooper is initially falling downward at a speed of 32.0 m/s before her parachute opens. When it opens, she experiences an upward instantaneous acceleration of 75.0 m/s2. LL ament Part 1 If this acceleration remained constant, how much time would be required to reduce the paratrooper's speed to a safe 4.00 m/s? (Actually the acceleration is not constant in this case, but the...
An elevator is initially moving upward at a speed of 12.60 m/s. The elevator experiences a constant downward acceleration of magnitude 3.92 m/s2 for 2.97 s (a) Find the magnitude and direction of the elevator's final velocity. magnitude direction !--Select--# (b) How far did it move during the 2.97 s interval?
While skydiving, your parachute opens and you slow down from 50.0 m/s to 8.00 m/s in 0.800 s. (a) Determine the distance you fall while the parachute is opening (b) Determine the magnitude of your acceleration during this time interval (c) Divide the acceleration found in (b) by g-9.80 m/s. Typically, some people feel faint if this exceeds 5 (5 g's). Will you feel faint? (d) What assumptions did you make in solving this problem?
A sky diver jumps from a helicopter and is falling straight down at 30 m/s when her parachute opens. From then on, her downward acceleration is approximately = g - cv^2, where g = 9.81 m/s^2 and c is a constant. After an initial "transient" period the descends at a nearly constant velocity of 5 m/s. (a) What is the value of c, and what are its 9 units? (b) What maximum deceleration is the sky diver subjected to? (c)...
QUESTION 4 A bullet is fired vertically upward, with an initial velocity of 260 m/s a) how high does it go? 1.3449.0 m 2.3384.6 m 3.345.1 m 4.6458.2 m QUESTION 5 A plane moving at 300 km/h lands on an aircraft carrier after rolling to a stop in 205 m. What was the required acceleration for a safe landing? (hint: transform units) 1.16.94 m/s2 2. 83.3 m/s2 3.8.4 m/s2 4.170 m/s2 QUESTION 6 A truck accelerates from 85 km/h to...
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