Mechanics | Relativity Answers

The top of the pool table is 0.790 m from the floor. The placement of the tape is such that 0 m is aligned with the edge of the table (as shown). The winner of the competition wants to know if he has broken the world record for the break shot of 32 mph (about 14.3 m/s). If the winner's ball landed a distance 3.65 m from the table edge, calculate his break shot speed. Also need to know at what speed did his pool ball hit the ground.

If an airplane travels a path length of 2260 m while traveling a horizontal distance of 1070 m, what is its angle of climb?

A gnat takes off from one end of a pencil and flies around erratically for 37.6 seconds before landing on the other end of the same pencil. If the gnat flew a total distance of 6.65 meters, and the pencil is 0.0763 m long, find the gnat\'s average speed, as well as the magnitude of the gnat\'s average velocity vector.

Vector A has magnitude of 13.9 and is 225° counter-clockwise up from the x-axis. What are the x- and y-components of the vector?

Suppose your average speed is 22 m/s for the first 130 minutes of a 3 hour trip. If you want your average speed for the whole trip to be 18 m/s, what must be the average speed for the remaining 50 minutes of your trip?

An object is moving with a velocity of 20 m/s to the East, when it begins to slow down. It slows down by 2m/s every second. Indicate the magnitude and direction of the object's acceleration.

An 1200 kg car can roll up and down a ramp at an angle of θ = 45° to the ground. It is connected, by a massless tow-rope that runs over a frictionless pulley, to a heavy spring of spring constant k = 50 kN/m, as shown in the figure. The car handbrake is released when the car is at rest, with the spring in its unstretched state. Assume the rolling motion of the car is frictionless and that the mass of the wheels is negligible compared to the main body.
a. What is the speed of the car when it has moved 10 cm down the ramp?
b. How far down the ramp from its point of release does the car roll before momentarily
stopping?
c. What is the direction (up or down the incline) of the car's acceleration at the instant the car
momentarily stops?

How a missile can fly kilometers without wings
Is Often trajectory of 45 degree from the launching surface is applied in every missile

How can I calculate the rotation of the acceleration vector of a circular motion where the tangencial motion is constant?

An object travels with velocity v = 4.0 meters/second and it makes an angle of 60.0° with the positive direction of the y-axis. Calculate the possible values of vx.