4. An object at rest falls from a height of 65.0 m. It attains itsterminal velocity after it had traveled 25.0 m. Neglecting airresistance, its terminal velocity is found to be 75 percent of itssupposed velocity just before it hits the ground. (a) Find theterminal velocity of the body. (b) How long does it take, afterreaching its terminal velocity, to reach the ground? AssumeNewton's law of resistance holds.

Here objects attains a terminal velocity. Only gravitational force only acts on the object, so…

Answered: An object at rest falls from a height…

Similar questions

If a weight is launched with an initial velocity of 45.9 meters per second, at an angle of 66.1° above horizontal, how much time will it take the balloon to reach the ground again? O 8.10 s O 3.79 s O 8.56 s O 4.14 s
An elevator in the Taipei 101 skyscraper can start fromrest and accelerate to a maximum speed of 16 m>s with a constantacceleration of 1.1 m>s2. Through what distance does the elevatormove as it accelerates to its maximum speed?
a paratrooper survived a training jump from 1200 ft when his parachute failed to open but provided some resistance by flapping in the wind. Allegedly he hit the ground at 100 mi/h after falling for 10 seconds. you should first find the drag coefficient gamma, assuming a terminal velocity of 100 mi/h and also that the deceleration of the paratrooper due to air resistence is proportional to his velocity, with constant of proportionality gamma. gamma=? Next find the distance D fallen in 10 seconds. D=?
A 3.20 kg toy rocket is launched from its platform and reaches a height of 253 m after 3.70 s. If the rocket motor only produced an upward acceleration for the first 1.00 s before running out of fuel, what was that initial upward acceleration? Neglect the effect of air resistance.
Most aircraft need an airspeed of about 120 knots (61.7 m/s) to lift off. If a fully laden b-52 starts from rest with an acceleration of 4.16 m/s2, how long a runway does it need to be able to take off?
In a local diner, a customer slides an empty coffee cup down the counter for a refill. The cup slides off the counter and strikes the floor at distance d from the base of the counter. (a) If the height of the counter is h, find an expression for the time t it takes the cup to fall to the floor in terms of the variables h and g. t = (b) With what speed does the mug leave the counter? Answer in terms of the variables d, g, and h. v1 = (c) In the same terms, what is the speed of the cup immediately before it hits the floor? v2 = (d) In terms of h and d, what is the direction of the cup's velocity immediately before it hits the floor? ? = radians
A rock is dropped off the side of a bridge and hits the water below 7.1 s later.(a) What was the rock's velocity when it hit the water?speed_________m/sdirection: upward or downward? (b) What was the rock's average velocity as it fell?speed_________m/sdirection: upward or downward? (c) What is the height of the bridge above the water?____________m
A rock of mass 51.2 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 15.7 N. What is the magnitude of the acceleration of the rock?
A man steps outside one winter day to go to work. His icydriveway is 8.0 m long from top to mailbox, and it slopes downwardat 20° from the horizontal. He sets his briefcase on theice at the top while opening the garage, and the briefcase slidesdown the driveway. Ignore friction. (a) What is its acceleration?(b) How many seconds does it take to get halfway to the mailbox?(c) How many seconds does it take to reach the mailbox?(d) What is its speed at the instant it reaches the mailbox?
At t = 0.00 s a ball is started rolling up an inclined plane with an initial velocity of 6.00 m/s, 15.0°. At t = 2.00 s the ball reverses its direction and begins to roll back down. (a) How far up the slope does the ball travel? (b) Find the ball's acceleration. (c) Find the speed of the ball at t = 3.00 s. (d) Find the distance traveled by the ball during these 3.00 seconds. (e) Find the ball's position at t = 3.00 s.
A cat leaps to try to catch a bird. If the cat's jump was at an angle 59.73 degree above the horizontal and its initial velocity was 26.46 m/s. At what time (in seconds) does it reach the highest point of the jump? You should neglect air resistance and use g = 9.8 m/s2.
Astronomers have discoveredseveral volcanoes on Io, a moon of Jupiter. One of them, namedLoki, ejects lava to a maximum height of 2.00 * 105 m. (a) Whatis the initial speed of the lava? (The acceleration of gravity on Io is1.80 m>s2.) (b) If this volcano were on Earth, would the maximumheight of the ejected lava be greater than, less than, or the same ason Io? Explain.

SEE MORE QUESTIONS