Mechanics | Relativity Answers

a honda moving at 100 km/h is 80km behind a ford moving in the same direction at 60 km/h. how far does the honda travel before it catches up with the ford?

A watermelon cannon fires a watermelon vertically up into the air at a velocity of +11.5 m/s, starting from an initial position 1.20 meters above the ground. When the watermelon reaches the peak of its flight, what is (a) its velocity, (b) its acceleration, (c) the elapsed time, and (d) its height above the ground?

A bal thrown straight upward returns to its original level in 2.20 s. A second ball is thrown at an angle of 42.0 degrees above the horizontal. What is the initial speed of the second ball if it also returns to its original level in 2.20 s?

About which axis of a body 'Moment of Inertia' is the least?

instead of releasing the ball along the ramp, suppose you simply dropped it.It would fall about 5 meters during the first second. How far would it freely fall in 2 seconds?

At what depth in a beaker of water a bubble will float. [density of water-1g/cm^3]

A football coach starts at the 10-yard line and walks to the 40-yard line. He turns around and walks to the 0 yard line. He turns once more and walks back to the 50 yard line. He turns around once more and walks back to the 25 yard line. Thus completing his 10 minutes of pacing. The coach's overall distance is ____.

A. 15yd, east B.15 yd, west C. 15yd
D.50yd, east E. 50yd, west F. 50yd
G. 60yd, east H. 60yd west I. 60yd
J. 85yd east K. 85yd west L. 85yd
M. 145 yd east N. 145yd west O. 145yd

or P. none of these

The eye of a hurricane passes over Grand Bahama Island. It is moving in a direction 62.3◦ north of west with a speed of 45.5 km/h. Exactly 3.07 hours later, the course of the hurricane shifts due north, and its speed slows to 29.1 km/h, as shown. How far from Grand Bahama is the hurricane 5.31 h after it passes over the island?

If the earth has a circumfrence of 60,000Km, how fast must a satelite be traveling if it is 300Km from the surface to remain in orbit?
Hint: gravity is 9.8m/s2

a piece of ice slides down a 45degree incline in twice the time it takes to slide down a frictionless 45degree incline. find the coefficient of kinetic friction between ice and incline.


the answer is 0.75 but i want the solution the answer is given in the back side of my book . i.e. yugbodh physics class 11th.