What is the time needed to take off
A plane accelerates from rest at a constant rate of 5.00m/s^2 along a runway that is 1800m long. Assume that the plane reaches the required takeoff velocity at the end of the runway. What is the time t_{rm TO} needed to take off?
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Tina begins to accelerate at a steady 2.70 m/s^2 at the instant when David passes. How far does Tina drive before passing David? What is her speed as she passes him?
The potential at the surface of a sphere of radius R is given by V = kcos^2(x) where k is constant. Find the potential inside and outside the sphere as a function of r and x (assuming there is no charge inside or outside the sphere). Hint: Write c
If magnitude of F1 is increased until the object just starts to leave the surface,, what is the magnitude of the acceleration on the mass in m/s^2 at this point?
The car accelerates with a constant acceleration. It reaches a speed of 16.8 m/s (60.5 km/h) in a distance of 126 m. Calculate the acceleration of the car.
Assume that the plane reaches the required takeoff velocity at the end of the runway. What is the time t_{rm TO} needed to take off?
While a parachutist is falling toward the ground, the downward force of gravity is exactly equal to the upward force of air resistance. Describe how/if the velocity of the parachutist changes- and explain your answer.
A uniform spherical shell of mass 8.50 {rm kg} with diameter 45.0 {rm cm} has four small masses of mass 2.30 {rm kg} attached to its outer surface and equally spaced around it. This combination is spinning about an axis running through the center
At the same time, a carefully aimed stone is thrown straight up from the bottom of the cliff with a speed of 25.0 . The stone and ball collide part way up. How far above the base of the cliff does this happen?
A rifle bullet with a muzzle speed of 300 m/s is fired directly into a special, dense material that stops the bullet in 36 cm. Assuming the bullet's deceleration to be constant, what is its magnitude?
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