Question

Brad bought a new car and wanted to test it on highways. He thought he will find out the acceleration of his car at different velocities in the first 6 seconds. He called his friend Steve and told him to sit alongside him and note down the different speeds. Steve prepared the following graph.
(I)
Find out the car’s acceleration from A to B.
(ii)
What was the displacement of the car from A to B?
(iii)
Find out the car’s acceleration from B to C.
(iv)
What was the total displacement of the car in 6 seconds?
(v)
Steve borrowed the car from Brad and went for a ride on a circular track and drove at a constant speed. Which of the following is/are true regarding the motion of the car?

Answer 1

Answer:

Two masses of 9.0×1024kg and 5.0×1024kg respectively, are separated by 1.6×1011m. A third mass is placed between the other two masses, such that it remains stationary. How far from the  9.0×1024kg mass is the third mass placed? Give your answer in giga-metres (Gm) but without a unit. Give your answer to two significant figures.

Explanation:

Two masses of 9.0×1024kg and 5.0×1024kg respectively, are separated by 1.6×1011m.