Question

1) Is a marble rolling down an inclined plane moving with constant velocity? Explain.

2) What can you say about the speed of a moving object if no force is acting on to it.?

3) Two forces of 5N &22N are acting in a body in the same direction what will be the

resultant force& in which direction will it act?

If the two forces in the above example would have been acting in the opposite direction

What would be the resultant force& in which direction will it act?

4) If we push the box with a small force, the box does not move, why?

5) What should be the force acting on an object moving with uniform velocity?

Answer 1

1. No, as it is rolling on an inclined plane due to varying height from ground the potential energy will keep on decreasing and kinetic energy will keep on increasing which will result in an external force due to the g acting in it.
2. If no force is acting the speed of the object will remain unchanged and a constant .
3. R=5+22=27N in the direction of the two forces ... all collinear

R=5-22=-17N in the direction opposite to 5N and in the direction(collinear to) of 22N force.
4. Due to the friction force of equal magnitude and opposite direction acting upon it on the contact surface offered by the ground.
5. As the object is moving with uniform velocity means it had no acceleration so there will be no force acting on it .

Thanks . Mark it as brainliest !!