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A rocket is launched and attains a spped of 7900 m/s when 35000 m abovve the surface of the earth. If the engines then shut down , how much higher will the rocket rise before beginning its fall back toward the earth..?
David Purley, a racing driver, survived deceleration from 173 km/hto 0 km/h over a distance of .660 m when his car crashed. find the average force acting on him during the crash
Two friends, Barbara and Neil, are out rollerblading. With respect to the ground, Barbara is skating due south at a speed of 2.7 m/s. Neil is in front of her.
The arm of a person weighs 41.5N, which acts at the center of mass that is located 29.0cm from the rotation point in the shoulder. What is the force required by the deltoid muscle, Fd, to hold the arm parallel to the floor
Both spacecraft are initially at rest. Explain how far does the starship move as it pulls the shuttlecraft aboard?
During a crash test, a car moving at 60 km/ hr collides with a rigid barrier and comes to a complete stop in 200 ms.
The greatest ocean depth yet discovered is the Marianas Trench in the western Pacific Ocean. A steel ball released at the surface requires 64 min to reach the bottom. The ball's downward acceleration is a=0.9g-cv, where g=9.81 m/s^2, and the constant..
At what driving frequency fd do two phasors have the same length? At that driving frequency, what are (c) the phase angle in degrees, (d) the angular speed at which the phasors rotate, and (e) the current amplitude?
A train starts at rest at a station and accelerates at a rate of 2.0 m/s^2 for 20 seconds. Then, this train runs at a constant speed for 100 seconds and slows down at a rate of 5.0 m/s^s until it stops at the next station. compute the total distan..
A very bouncy ball is dropped from a height of 2.37 m to an asphalt playground surface and the height of its 5th bounce is measured to be 1.69 m. Find the coefficient of restitution of the ball for a collision with asphalt.
An airplane with a speed of 74.9 m/s is climbing upward at an angle of 38.3 ° with respect to the horizontal. When the plane's altitude is 631 m, Calculate the distance along the ground
Starting from a rest a car accelerates at 2.3 m/s2 up a hill that is inclined 5.9 degrees above the horizontal. How far vertically has the car traveled in 15 seconds
A plane of a 5.0 cm x 8.0 cm rectangular loop of wire is parallel to a 0.19 T magnetic field. The loop carries a current of 6.2 A. What is the magnetic moment of the loop
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