Mechanics | Relativity Answers

Spider-Man is running at a speed of 4.5 m/s and swings on his web from a street light directly above him. How high can he swing?

A skydiver jumps from a helicopter hovering at high altitude.
Neglecting air resistance, how fast will she be falling 12 after jumping?
How far will she have fallen?
What us her average velocity

A rifle is firmly attached to a heavy bench, with its 75.0 cm long barrel pointing horizontally. It fires a 9.00 g bullet which leaves the muzzle at a speed of 970 m/s. assuming the acceleration of the bullet down the length of the barrel to be constant, what horizontal force does the gun exert on the bench as it fires?

A beam 5m long is supported at it's ends A and B point load W1&W2 were placed at C and D, 1m and 3m respectively from A. If the reaction at A is twice the reaction at B, find the ration of the loadss W1&W2...

A child in a boat throws a 5.75-kg package out horizontally with a speed of 10.0 m/s. The mass of the child is 23.6kg and the mass of the boat is 37.6kg. Calculate the velocity of the boat immediately after, assuming it was initially at rest. v′A=?

A cylinder with an inside diameter of 105mm is 2.75 meters long. It contains a gas at 790torr. If a piston compresses the gas by 1.2m, what is now the pressure of the gas inside the cylinder in psi?

For his daily training, an athlete runs a round a 15.0 m radius track five times in 2.50 minutes. What is his average speed? and average velocity?

two particles are travelling along a straight line AB of length 20cm. at the same instant one particle starts from rest at A and travels towards B with a constant acceleration of 2m/s2 and the other particle starts form rest at Band travels towards A with a constant acceleration of 5m/s2. find how far from A the particles collide.

A stone is dropped at rest from the top of a cliff. it is observed to hit the ground 5.78s later it falls an acceleration of -10m/s2. How high is the cliff?

An electric fan goes from rest to 1700rpm in 4.7s. What is its angular acceleration ?