Free download in PDF CBSE class 9 Science Objective Type Questions & Answers. Here Gkseries provide Science Solve Questions and Answers for CBSE class 9 Students.
21
As per the statement given in Q.9 above, What change it will take place for the potential energy of the car
22
A car with mass ‘M’ is moving on horizontal road with velocity ‘v’. Driver applies accelerator and increases it speed 3 times to ‘3v’. The final K.E. acquired by the car will be :
23
An external force is being applied on an object at some angle and it causes the object either to be pulled or pushed on a rough surface. Which of the following holds true ?
A
It is easier to push the object
B
It is easier to pull the object
C
It requires same efforts to push or pull the object
28
A soldier makes a swing jump between two points, by holding one end of a rope, other end of which is tied to some higher point. Work done by rope in jumping of soldier from one point to another is an example of :
30
A dog weighing 25 kg, while chasing a cat, jumps over a fence of height 1.6 m. What is the potential energy of dog at the top of fence ?
(Take gravity due to earth 'g'=10 m s-2 )
31
Two objects A and B are moving with same momentum. Mass of object 'B' is greater then mass of object 'A'. Which of the two object will have higher kinetic energy?
A
Object A
B
Object B
C
Both the objects will have same Kinetic Energy
D
Object with greater mass will have higher kinetic energy
