Mechanics | Relativity Answers

What is the main restriction for using the equation |mg| Delta h Delta U g =?

A hicker begins a trip by first walking 25 km south east from her car then she walks 40 km in a direction 60 degree centigrade north of East (a) determine the component for each displacement (b) determine R esultant displacement

An aeroplane flies from origin to city located 175 kilometre 30 degree northof East next it flies 153 kilometre 20 degree centigrade west of north to city B.finally it flies 195 kilometre due West to city C find the total displacement

A special phototype model aeroplane of mass 400g has a control wire 8cm long attached to its body the other end of the control line is attached to afixed point .when aeroplane flies with its string wing horizontal in a horizontal circle 30degree above the horizontal .draw a diagram showing the four exerted on a plane and determine. a)Tension in the control wire b)the lift on the plane ( g=10m/s pie^2=10)

A 2kg body panel of a car oscillate with a frequency of 2Hz and magnitude of 2.5cm. if the oscillation is assume to be a simple harmonic oscillation and undamped calculate (i) maximum velocity of the panel. (ii) Total energy of the panel. (iii) The maximum potential of the panel. (iv) The Kinetic energy of the panel 1.0cm from it's equilibrium.

you speed up from rest in the forward horizontal direction with a constant magnitude of acceleration equal to 3.4m/s^2 and then some tome later slow down with constant magnitude od acceleration equal to 5m/s^2. Describe and calculate the following for a 0.3 m long dangling object from your rear view mirror

A ball is dropped from rest from a height of 10.0 m. Calculate:
a) The time it takes to hit the ground and the speed with which it reaches it.
b) The speed it has right after the first boat, if with the rebound it loses 20% of the initial speed.
c) The maximum height of the second boat.

At one point Alice is running due west at 6 m/s. Later she is running due east at 4 m/s. How could we write her velocities to show that they are in opposite directions?

The net force on a moving object suddenly becomes zero. The object then

4) A projectile is launched from the edge of a cliff with a velocity of 10.0 m/s at an angle of 30.0 degrees above the horizontal. What is the velocity of the projectile 2.00 seconds later (ignoring air resistance, and assuming it hasn't reached the ground yet)? A) VX-8.7 m/s, Vy -14.6 m/s B) VX = 14.6 m/s, Vy --5.6 m/s C) Vx = -8.7 m/s, Vy --14.6 m/s D) Vx--14.6 m/s, Vy - 8.7 m/s E) Vx = 5.6 m/s, Vy --14.6 m/s