Question

SCIENCE FOR NINTH CLASS : PHYSIC
Name the physical quantity which gives us an idea of how slow or fast a body is moving.
Under what conditions can a body travel a certain distance and yet its resultant displacement be zero?
In addition to speed, what else should we know to predict the position of a moving body?
When is a body said to have uniform velocity?
Under which condition is the magnitude of average velocity equal to average speed ?
Which of the two can be vero under certain conditions: average speed of a moving body or average velocit
of a moving body?
Give one example of a situation in which a body has a certain average speed but its average velocity is zero
5. What is the acceleration of a body moving with uniform velocity ?
5. What is the other name of negative acceleration ?
7. Name the physical quantity whose SI unit is:
gms (6) m/s2
8. What type of motion is exhibited by a freely falling body?
9. What is the SI unit of retardation ?
0. Fill in the following blanks with suitable words:
(a) Displacement is a .................... quantity whereas distance is a ...
(b) The physical quantity which gives both, the speed and direction of motion of a body is called its.....
....... quantity.
A motorcycle has a steady ........... of 3 m/s. This means that every...
Velocity is the rate of change of ..................... It is measured in ......
.......its.........
............increases by.....
(e) Acceleration is the rate of change of............... It is measured in ...
ort Answer Type Questions
21. What type of motion unifor​

Answer 1

Explanation:

answer is here else I will answer later

Answer 2

answer

fill in the blanks

1 vector and scalar

2velocity

3second , velocity,3m/s

4acceleration ,second ,3m/s

5displement m/s

6 velocity,m/s