What is the change in kinetic energy of the planet

Reference no: EM13528965

A planet of mass 7.00 1025 kg is in a circular orbit of radius 6.00 1011 m around a star. The star exerts a force on the planet of constant magnitude 6.51 1022 N. The speed of the planet is 2.36 104 m/s.

(a) In half a "year" the planet goes half way around the star. What is the distance that the planet travels along the semicircle?

distance = m

(b) During this half "year", how much work is done on the planet by the gravitational force acting on the planet?

work = J

?K = J

(d) What is the magnitude of the change of momentum of the planet?

|?p| = kg Â· m/s

Reference no: EM13528965

Questions Cloud

What is the balls velocity when it hits the truck : A ball is thrown horizontally from a cliff of height H at the very same moment a truck is passing by the base of the cliff at a constant speed Vtruck. What is the ball's velocity (magnitude and direction) when it hits the truck

Estimate the magnitude of the acceleration of each object : An object with mass m1 = 3.20 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley, Find the magnitude of the acceleration of each object

Calculate the force exerted by the rope on the bucket : A 5.6-kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 3.8 m/s2, find the force exerted by the rope on the bucket

Calculate how much work does jill do : Jack and Jill are maneuvering a 3400 kg boat near a dock. Initially the boat's position is m and its speed is 1.0 m/s. How much work does Jill do

What is the change in kinetic energy of the planet : A planet of mass 7.00 1025 kg is in a circular orbit of radius 6.00 1011 m around a star. What is the change in kinetic energy of the planet

What is the tension in the string as the block falls : A mass m1 = 4.7 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.3 kg which hangs freely from the string. What is the tension in the string as the block falls

Find what orientation gives sum of zero : Consider adding four phasors of equal amplitude due to four point sources in a line. What orientation gives sum of zero

Obtain how far from where it was kicked will the ball land : A soccer ball is kicked with an initial horizontal velocity of 12.0 m/s and an initial vertical velocity of 19.0 m/s, How far from where it was kicked will the ball land

Calculate for how long in time was the hare stationary : A hare and a tortoise compete in a race over a straight course 1.00 km long. The tortoise crawls at a speed of 0.200 m/s toward the finish line. For how long in time was the hare stationary

User Account

All Pages