Question

1 mark questions
1. The vector whose magnitude is zero is called zero vector. It is represented by
2. The magnitude of the vector ai+bj is
3. If the acceleration of a body is negative, then
velocity is greater than
velocity.
4. Slope of displacement-time graph gives
5. Mathematical formula for average speed is​

Answer 1

Step-by-step explanation:

Given A 4 digit number was rounded off to the nearest ten and the result was 1630.find the interval of the original number.

The units digit of the number can be either greater than or less than five.

Now if the unit digit is less than five, the tens digit has to be five. Also if the units digit is greater than five then the tens digit has to be six.

Therefore the number will be between or in the interval of 1625 to 1634...

Answer 2

Answer:

1. A arrow towards right on 0(zero)
2. |ai+bj|
3. then velocity is greater then 1
4. ACceleration
5. [v initial + v final]/2