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A 124-kg balloon carrying a 22-kg basket is descending with a constant downward velocity of 25.2 m/s A 1.0-kg stone is thrown from the basket with an initial velocity of 11.7 m/s perpendicular to the path of the descending balloon, as measured relative to a person at rest in the basket. The person in the basket sees the stone hit the ground 6.70 s after being thrown. Assume that the balloon continues its downward descent with the same constant speed of 25.2 m/s .How high was the balloon when the rock was thrown out?
How high is the balloon when the rock hits the ground?
At the instant the rock hits the ground, how far is it from the basket?
Just before the rock hits the ground, find its horizontal and vertical velocity components as measured by an observer at rest in the basket.
just before the rock hits the ground, find its horizontal and vertical velocity components as measured by an observer at rest on the ground.
Consider a simple model for the interior of the Earth: there is a spherical iron core with constant mass density ?0 and radius a; outside the core is "rock" with constant density ?1. Calculate the radius a of the iron core
all spiders have special organs that make them exquisitely sensitive to vibrations. web spiders detect vibrations of
A 2.3 kg box, starting from rest, is pushed up a ramp by a 10 N force parallel to the ramp. The ramp is 2.0 m long and tilted at 17 degrees. How much work does the force do on the system
a solid disk is released from rest and rolls without slipping down an incline plane that makes an angle of 25degrees
A disk on the ground has a mass1 sitting on it at a distance of r1 from the center. It is rotating at a constant rate. The weight has a velocity v1. What is the smallest time of revolution mass 1 can have without flying off
The drawing shows two boxes resting on frictionless ramps. One boxis relatively light and sits on a steep ramp. The other box isheavier and rests on a ramp that is less steep.
Find the time taken by the stone to reach the ground. and the speed with which it hits the ground.
A duck is floating on a lake with 23% of its volume beneath the water. What is the average density of the duck
A proton with an initial velocity of (1.0x + 2.0y + 3.0z) x 10^5 m/s enters a megnetic field of 0.50z T. Find the magnitude of the force on the proton. The mass of the proton is 1.67 x 10^-27 kg.
A plate carries a charge of -4 ?C, while a rod carries a charge of 2.50 ?C. How many electrons must be transferred from the plate to the rod
A large man sits on a 4-legged chair with his feet off the floor. The combined mass of the man and chair is 95.0 kg.what pressure does each leg exert on the floor
a ball is attached to a center post by a string that is 0.378 m long. the ball is moving in a circle on a frictionless
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