Question

1) It is advised to use seat belt while driving, why?
2) ------------ of a body is a measure of inertia of the body.
3) Give one example of each-Inertia of motion, inertia of rest, inertia of direction.
4) What is the SI unit of momentum?
5) Define 1 Newton force.
6) First law of motion gives ____________ definition of force and second law gives_____________ definition of force.
7) Accelerated motion is due to some ____________ force acting on the body.
8) What would be the force required to produce an acceleration of 2m/s2 in a body? What would be the acceleration if the force is doubled?
9) For how long should a force of 100N act on a body of mass 20kg so that it acquires a velocity of 100m/s?
10) A ball of mass 10g is dropped from a height. It is found to fall with a constant velocity. What is the net force acting on it?
11) The distance time graph for an object is a straight line with slope. What would be the force acting on that object if it has a mass of 20kg?
12)

Answer 1

it is due to inertial