Acceleration

Q.

What term is used to denote the change in velocity with time? Obtain its SI unit.

Q.

If a train is traveling due north and its brakes are applied, it will have?

Q.

What will be SI unit of velocity/acceleration.

Q.

The ratio of SI units to CGS units of retardation is :

1. 10^-2

2. 10²

3. 10

4. 10^-1

Q.

Give the equations of motion of a particle undergoing retardation along a straight line.

Q.

If the displacement of a body is proportional to the square of the time elapsed, what type of motion does the body possess?

Q. For an object moving in a circular path, the centripetal force acts on it towards the centre of the path.

1. True
2. False

Q. The mean of the following date $1^2,2^2,3^2,....n^2$ is

1. $\frac{(n+1)(2n+1)}{6}$
2. $\frac{(n-1)(2n+1)}{6}$
3. $\frac{(n+1)(2n-1)}{6}$
4. $\frac{(n-1)(2n-1)}{6}$

Q. When does an object is said to be in a state of free fall?