The planets are
affected by gravitational force of ………
a) moon
b) asteroids
c) sun
d) meteors
Which of the following move the planet in its orbit?
a) gravitational force of their moon
b)gravitational force of sun
c)gravitational force of their own mass
d)gravitational force of their satellite
What will happen if the gravity of the ceases?
a) the planet will move in orbit
b) the planet will move in straightway
c) the planet will move toward the sun
d) none of these
Every object wants to maintain in one of two state: rest or uniform motion. This property of object is known as………
a)inertia
b) momentum
c) gravity
Why it is difficult to move a large stone? It is because it has…….
a) inertia
b) momentum
c) gravity
Which of the following force moves the object in circle?
a) gravitational force
b)centrifugal force
c)centripetal force
d) attractive force
