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A car starts from rest and reaches a speed of 31m/s in 2 seconds. Calculate its acceleration, if this value stays the same then what it the speed 7 seconds
A projectile of mass 0.6 kg is fired vertically upwards in the barrel of a gun by a vertical net propelling force of 50 N acting over a period of 0.5 seconds.
Haley's comet orbits the sun every 76 years, and was first observed in 240bce. Its orbit is highly elliptical, so that its closest approach to the sun
Astronomy is the most ancient science. Discuss how the development of astronomy is interrelated with the development of civilization.
What are the right ascension and declination of the point in the sky where the ecliptic and the celestial equator intersect in March each year?
Which one of the following quantities is a vector quantity?
Hence show that the resultant velocity v of the dragonfly is given in component form approximately by v = -2.8368 i + 9.5094 j.
What is the angle (measured relative to horizontal) that the football hits the ground at in degrees?
Mr. Stick drops a small water balloon off the top of a building (V0 = 0 m/s). He releases the balloon at a height H = 10 m above the surface of Teflon.
Explain in everyday English and using formulas, the difference between 'electric potential' and 'electric potential energy'.
If the density of the plywood is 550 kg/m^3, what is the moment of inertia of the door about the hinges?
The Universe according to the prevailing current body of evidence is likely to
Assume the base-runner leaves his base at the same instant the centerfielder throws the ball, and that the ball reaches the catcher standing.
What is the total mass and total size of the Milky Way Galaxy? Is it possible to determine these large quantities even if we've never been able to look
The total energy of the mass-spring system at x = A is the same as the total energy at x = 0.The speed of the mass is maximum at x = 0
He measures the distance between two crests to be 9.0 m. How fast are the waves traveling?
It takes a force of 300 N to keep a 500-N box sliding across a floor. What is the coefficient of the sliding friction?
A 6.30 kg mass hanging from a spring scale is slowly lowered onto a vertical spring, as shown in figure.
How far in miles has a car gone in 0.01 hours if it is traveling at 27.28 m/s?
Evil Kneivel rides his motorcycle off the rim of the Snake River Canyon at a horizontal velocity of 52 meters per second.
On a rather cold and rainy day we observed that the wind was blowing from the NE and the waves were traveling in all directions. Why would this be?
A force of 1.05x 10^3 N is required to lift an object that is under the influence of an acceleration due to gravity of 7.76ft/sec^2
What is the amplitude of the oscillation shown in the figure? What is the frequency of this oscillation?
Four spheres, labeled 1, 2, 3 and 4, are arranged as shown in the figure below. The spheres interact with each other through gravitational forces.
A particle with a mass of .500 kg is attached to a spring with a force constant of 50.0 N/m.