Aircraft carriers use catapults to launch jets from their deck. One such catapult accelerates a 18,300 kg aircraft from rest to 72 m/s in 3.1 s. What is the magnitude of the force (in N) required to do this?

A 91 kg janitor wearing running shoes is running across an ice rink at a speed of 3.2 m/s. They try to stop abruptly, but keep sliding across the surface of the ice. The ice exerts a frictional force of 13.4 N to slow them down. How far do they travel before halting to a stop?

You are in an elevator that is initially at rest. At t=0, it heads downward and speeds up as a function of time. It experiences a velocity given by v(t) = (−2.00t²ĵ)² m S a) What is the normal force that you experience at t=1.20 s? Assume you have a mass of 70.0 kg. b) How far did the elevator drop in 1.20 s?

A lump of clay of mass 0.21 kg is dropped from a height of 5.5 m. The clay comes to a full stop 0.071 s after the moment it first touched the ground. What is the magnitude in newtons of the average force of impact that the clay experienced? Express your answer in two decimal places, with units of Newtons.

A steam catapult applies a very large force to supplement the engine thrust of a jet fighter as it takes off from an aircraft carrier. The jet has a mass of 3850 kg ad must reach its take off speed of 75 m/s at the end of the 208 m fight deck. What is the combined force of the catapult and engines?

The muzzle velocity of a typical 500 g spud is 25 m/s . The force given by the spud is K/(x+.09) where x is the distance of the barrel in meters. If the length of the barrel is 75 cm, what is the constant K? What is the force on the spud?

Determine the force Q-> when the block moves with constant velocity. Express your answer in vector form.

Superman is applying a 17,000 N horizontal force to try and stop a speeding locomotive.  This train has a mass of {9004} kg, it is on level, horizontal track, and gravity in Metropolis is 10 N/kg.  The train is originally travelling at 25 m/s, and the brakes have failed. (Friction force is zero).   Draw a Force Body Diagram of the train, labelling and calculating all forces. What is the acceleration of the train? How many seconds does it take for Superman to stop the train? How far does the train travel in that time?

A person catches a ball with a mass of 145 g dropped from a height of 60.0 m above his glove. His hand stops the ball in 0.0100 s. What is the force exerted by his glove on the ball? Assume the ball slows down with constant acceleration.

A commercial airplane is coming in for a landing. Just before it hits the runway it is moving at 76 m/s. The plane has a mass of 20,000 kg. The runway is 1.6km long and, obviously, the airplane needs to be stopped before it reaches the end of the runway. How large is the braking force the airplane needs to stop safely before the end of the runway?