Classical Mechanics Answers

Miss Y agreed to keep a request from her friend to cook rice in an aluminium pot. A metal cover was used on the top of the aluminium pot during cooking, but after a short-while the metal cover was fallen down. They involved in a debate to explain it using a theorem of physics why the metal cover has been fallen down from the top of the aluminium pot. Miss Y said that it was due to produced pressure but her friend agreed on it to some extent and also asked about the conversion of energy, demanding to show the expression for the theorem. Could please help Miss Y?

Say, Mr. X runs on a plain land and jumps from a spot in forward direction. Recognize and describe his jumping motion through an equation and make an argument for your answer.

A 0.140-kg baseball is dropped and reaches a speed of 1.20 m/s just before it hits the ground. It rebounds with a speed of 1.00 m/s. What is the change of the ball's momentum?

You throw a ball vertically upward from the roof of a tall building. The ball leaves your hand at a

point even with the roof railing with an upward speed of 15.0 m/s; the ball is then in free fall. On its

way back down, it just misses the railing. Find (a) the ball’s position and velocity 1.00 s and 4.00 s

after leaving your hand; (b) the ball’s velocity when it is 5.00 m above the railing; (c) the maximum

height reached; (d) the ball’s acceleration when it is at its maximum height.

. A particle moves a fixed point O. The velocity v of the particle at time t s is given by v = (3t − 2)(t − 4) and s . A particle moves a fixed point O. The velocity v of the particle at time t s is given by

v = (3t − 2)(t − 4) and s = 8m when t = 1s, find:

(a) the initial velocity of the particle [1]

(b) the acceleration of the particle when t = 3s. [2]

(c) the values of t when the particle is at rest [2]

(d) the distance the particle is from O when t = 2s. [5]

(e) the distance travelled when t = 2s= 8m when t = 1s, find: (a) the initial velocity of the particle [1] (b) the acceleration of the particle when t = 3s. [2] (c) the values of t when the particle is at rest [2] (d) the distance the particle is from O when t = 2s. [5] (e) the distance travelled when t = 2s

Betty walks 2km due west then 2km due south calculate the displacement

Hello, I am trying to figure out the speed of wind it would take to move a bulk cart at the airport. The bulk cart was hit by jet blast and pushed into an aircraft. What was the wind speed from that jet blast?

The bulk cart is a rectangular metal box on wheels. The surface area hit by the blast is 1.5m x 1.5m. The cart weight 771.107kg. The cart moved 4.572m in 2.5 seconds before it struck the aircraft.

Can anyone help?

Two balls, A and B, are launched horizontally at the same time from the same height.  Ball A is launched with an initial speed of 12.6 m s-1 and lands 23.2 m away.  Ball B lands 56.4 m away.

1. How high were the balls launched from?
2. How fast was ball B launched at?