Directions of the velocity and the acceleration

Reference no: EM13556406

Over a time interval of 1.89 years, thevelocity of a planet orbiting a distant star reverses direction, changing from +20.0 km/s to -17.7 km/s. Find the following values, include the correct algebraic sign with your answers to convey the directions of the velocity and the acceleration.

a) the total change in the planet'svelocity
b) its average acceleration during this interval

Reference no: EM13556406

Questions Cloud

How would more oil in tank have affected the collapse time : A storage tank has a diameter of 80 ft, a height of 25 feet, and contains oil to a height of 15 ft. The suction pumps, whichcan handle 15, 000 bbl/d are started, but the safety valves areclogged and a vacuum is drawn in the tank. The roof is flata..

What is the porosity of the sandstine : A piece of sandston with a bulk volume of 1.3 cc is contained ina 5-cc cell filled with helium at 760 mm Hg. Temperature ismaintained constant and the cell is opened to another evacuatedcell the same volume. The final pressure in the two vesselsis..

Finish the the course at the sametime as the older runner : An 18-year-old runner can complete a 10.0 km course with an averagespeed of 4.57 m/s. A 50-year-old runnercan cover the same distance with an average speed of 4.42 m/s. How much later (in seconds) should theyounger runner start in order to finish ..

What was it average speed inside the barrel : A bullet leaves the muzzle of a gun at a speed of 400m/s. The length of the gun barrel is 0.50m. Assuming the bullet was uniformly accelerated .

Directions of the velocity and the acceleration : Over a time interval of 1.89 years, thevelocity of a planet orbiting a distant star reverses direction,changing from +20.0 km/s to -17.7 km/s. Find the following values, include the correct algebraic sign with your answers to convey the directions..

Front of a convex mirrorand notices : A child holds a candy bar 10.0 cm in front of a convex mirrorand notices that the image is only one-half the size of the candybar. What is the radius of curvature of the mirror?

Represents the crests of water waves spreading : The picture below represents the crests of water wavesspreading out from a periodic disturbance in a pond. The phasedifference (in degrees) between points A and E is

What was the vertical component of jills velocity : Jack and Jill ran up a hill at 3.4 m/s. The horizontal component of Jill's velocity vector was 2.5 m/s. What was theangle of the hill? What was the vertical component of Jill's velocity?

What is the radius of curvature of the mirror : A child holds a candy bar 10.0 cm in front of a convex mirror andnotices that the image is only one-half the size of the candy bar. What is the radius of curvature of the mirror?

User Account

All Pages