Fill in blanks:
i. Force is a …………. quantity.
ii. The velocity at a particular time is called …………. velocity.
iii. The …………. of a body is the distance traversed per unit time.
iv. Unit of acceleration is …………. and …………. .
v. Force is measured by the …………. that it produces.
vi. Work done by a body with no displacement will be …………. .