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An attacker at the base of a castle wall 3.70 m high throws a rock straight up with a speed 8.30 m/s from a height of 1.68 m above the ground.
a) Will the rock reach the top of the wall?
b) What is the speed at the top? If not what initial speech must it have to reach the top?
c) Find the change in speed of a rock thrown straight down from the top of the wall at an initial speed of 8.30 m/s and moving between the same two points?
In 1926 Babe Ruth hit a home run that was estimated to have landed 180m from home plate and to have reached a height of 21.3 m. What was the initial velocity of the ball
A storage tank has a diameter of 80 ft, a height of 25 feet, andcontains oil to a height of 15 ft. The suction pumps, whichcan handle 15, 000 bbl/d are started, but the safety valves areclogged and a vacuum is drawn in the tank.
A large stick is pivoted about one end and allowed to swing back and forth as a physical pendulum. what is its moment of inertia, about an axis through the pivot
A 2.52g bullet moving at 290 m/s enters and stops in an initially stationary 2.50 k/g wooden block on a horizontal frictionless surface. How much work was done in stopping the bullet
He pulls on a rope that is fastened to the platform and runs over a pulley on the ceiling. Illustrate with what force does he have to pull in order to give himself and the platform an upward acceleration of 1.0 m/s^2?
At t=0 a grinding wheel has an angular velocity of 24.20 rad/s. It has a constant angular acceleration of 24.2 rad/s^2 until a circuit breaker trips at t = 1.2 seconds.
Determine the coefficient of kinetic friction between the crate and surface.
Starting with the left-most column, populate the boxes from left to right without skipping empty boxes. Ties should be grouped in the same box
The bullet penetrates into the block and stops due to its friction with the block. The compound system of the block plus the bullet rises to a height of 11 cm along a circular arc with a 20 cm radius A bullet with a m1 = 30.0 g mass is fired horizont..
2.50 moles of a monatomic ideal gas expand adiabatically from an initial temperature of 300K, What is the final temperature of the gas
1 electric field lines there are two uniform electric fields e1 is in the positive x direction with 100 nc and e2 is in
A motorboat traveling on a straight course slows uniformly from 60 km/h to 40 km/h in a distance of 50 m. What is the boat's acceleration
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