Mechanics | Relativity Answers

What force is required to move a load of 5kg through a distance of 1000cm in 5seconds

M=0.500kg on level table, Fs= 0.600. Three strings tide together in a knot, 1 attach to mass, 2 30°above horizontal attached to wall, 3 hangs M2 vertically what is the Maximum weight of M2 for M1 & 2 to remain in equilibrium

Calculated using the value
g = 9.8 m/s2
,the time interval required for an object released from rest at some arbitrary point A,above the ground to reach the ground is Δt.

1.If g were 5.9 m/s2 , by what factor would the time interval Δt′
calculated for this value of g
differ from the value calculated using g
g = 9.8 m/s2

From a promontory overhanging a lake, you throw a stone that enters the water vertically at 15.0 m/s You hear the splash 2.66 s
after you release the stone. The speed of sound in air is 340 m/s.

1.What was the stone's initial speed?

2.Did you throw the stone down or up?

3.From what height above the lake surface did you release the stone?

An alpha particle having a speed of 1.0X6^6ms^-1 collides with the stationary proton which gain an initial speed of 1.60X10^6ms^-1 in the direction of an alpha. 1. What is the speed of 2particle immediately after the collission? 2. How much kinetic energy is gain by the proton after the collission?

A resultant force at 200N is applied to a vehicle of mass 400kg which is initially at rest on a horizontal surface at the total for opposing the motion is constant at 800N.1.Calculate the acceleration of the vehicle, 2.Kinetic energy of the vehicle at 5second After the force is applied? 3.Total power develop 5second after the force first applied?

santa claus is delivering christmas presents to the children of venice. a venice house has a roof that slopes 60, with its lowest edge above the water of a channel. as santa exits the chimney, he is unaware that some misguided citizen has coated the roof in frictionless snow to make him feel at home. her starts to slide down the roof, travelling 3.77m to the lower edge. at that instant, frightened for his life, santa jumps with a speed of 6 m/s at an angle of 90 relative to the rooftop. if the roof edge is 10.06 above the channel how far from the house does santa splash land

A device launches ballons at a tangent with speed 12ms^-1. The tangent is 14m away at the same elevation the side of the fence. How can this be accomplished with gravity = 9.8ms^-2

A boat that can travel at 4.0 km/h in still water crosses a river with a current of 2.0 km/h. At what angle must the boat be pointed upstream (that is, relative to its actual path) to go straight across the river? Draw a diagram

Two cars approach each other on A straight and level road. Car a is traveling at 75Km/h, due north and car B is traveling at 45Km/h, due soth. Both velocities are measured relative to the ground. What is the velocity of a car A relative to an observer in car B