Classical Mechanics Answers

A force of P N acting on a body of 5 kg travelling with a velocity of 5 ms increases its velocity to 10 ms. If the force acts in the direction of motion for a period of 5 s, what is the value of P?

A 500 Mg fug is Towing a 1000 Mg barge at a steady speed of 3 ms when the towline, which is horizontal, is winched in at a rate of 0.5 ms. What is the tug's speed during this operation!

A railway truck of 100 kg mass travelling with a velocity of 7 ms collides with a second truck of 200 kg mass and the two couple automatically and move off together. Calculate the velocity of the coupled trucks, and the energy lost to the system, if the second truck has a speed of 5 ms (al in the same direction, (b) in the opposite direction and ic) is initially stationary

A car preceding down a 1 in 10 incline at 6.5kph when it's brake are abruptly applied. How far does it skid along the road before stopping If the wheels lock and the coefficient of friction between tyres and the road is 0.7?

A 60g bullect is fired at a target that presents an average resistive force to the passage of the bullet of 20KN per metre thickness of the material from which it is constructed. If the bullet strikes the target at 600m/s, what does the minimum thickness of target have to be to stop the passage of bullet completely.

determine the magnitude of an electric field at r=0.01m from the center of non-conducting sphere with a radius R=0.001 possessing a charge of 7C which evenly distributed throughout the sphere. (r>R).

solve for the electric flux that acts on a uniform electric field with a magnitude of 8000N/C approximately passes through a 10m^2 flat surface area

A molecules of oxygen possess a charges of -2C and 2C separated from

a distance of 0.2m. Calculate the dipole moment in this condition.

solve for the maximum torque within uniform electric field of 6 x 10^4N/C experiences a dipole moment of 5 x 10^-14Cm.

How long must a train undergo constant acceleration in order to go from 35 km/h east to 45 km/h west ending up 250 mm west of its original position ?