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Mechanics | Relativity
A jet lands on an aircraft carrier at 140 mi/h ( ).
(a.) What is its acceleration if it stops in 2.0 s?
(b.) What is the displacement of the plane while it is stopping?
(a.) What is its acceleration if it stops in 2.0 s?
(b.) What is the displacement of the plane while it is stopping?
Mechanics | Relativity
For part 3 of 3, just enter magnitude (positve number) A 1720 kg car has a speed of 10.3 m/s when it hits a tree. The tree doesn’t move and the car comes to rest. Find the change in kinetic energy of the car. Answer in units of J. 008 (part 2 of 3) 10.0 points Find the amount of work done by the car as its front is pushed in. Answer in units of J. 009 (part 3 of 3) 10.0 points Find the magnitude of the force that pushed the front of the car in by 50 cm . Answer in units of N.
Mechanics | Relativity
Derive the speed of transverse waves on a uniform string, with the help of suitable diagram.
Mechanics | Relativity
Define damped harmonic motion & solution of differential equation of damped oscillator.
Mechanics | Relativity
It is less dangerous to jump from a high wall on to loose earth than on to a concrete pavement. Why?
Mechanics | Relativity
A wooden incline plane is being built, along which wooden crates of merchandise are to be slid down into the basement of a store.
a.what angle with the horizontal should the incline plane be made if the crates are to slide down at constant speed?
b.With what force must a 100 kg crate be pushed in order to start it sliding down the incline plane if the angle of the incline plane is that the one found in (a)?
a.what angle with the horizontal should the incline plane be made if the crates are to slide down at constant speed?
b.With what force must a 100 kg crate be pushed in order to start it sliding down the incline plane if the angle of the incline plane is that the one found in (a)?
Mechanics | Relativity
The coefficient of kinetic friction between a rubber tire and a dry concrete road is 0.700. What is the distance in which a car will skid to a stop on such a road if its brakes are locked when it is moving at 85 kph?
Mechanics | Relativity
A wooden crate is at rest on a level stone floor. A. What is the minimum horizontal force needed to start the crate moving? B. What is minimum horizontal force needed to keep the crate in motion at constant speed. C. what will happen if a horizontal force of 500 N is applied to the crate? µs = 0.5 µk = 0.4
Mechanics | Relativity
A horizontal force of 10 N is applied to a 4.0 kg block that is at rest on a perfectly smooth, level surface. Find the speed of the block and how far it has gone after 6.0 s?
Mechanics | Relativity
A 1,300 kg has an initial speed of 15 kph. How much force is required to accelerate the car to a speed of 120 kph in 10.0 s?
