1. define force is it necessary for the two bodies to be in direct contact for a force to exist between them explain with examples
2. State three effects of a force give suitable examples
3. two roads A and B of the same weight and equal length have different thickness a boy by playing with them on a beach health M vertically on the surface of sand as shown in the figure which one of the following will think less explain
4. three holes A B and C are made in an Empty can at different levels one over the other as shown in the figure they are temporarily closed with an adhesive tape these the condition of filled with water what will you observe when the tap on all of them is pulled out justify your answer
Answers
1.force is a push or pull which an object experiences when it interacts with another object.
force is a factor which change the shape,size or position of object
it is not necessary for 2 bodies to be in direct contact for force......
ex-magnetic force....
2. 1.force can change the shape. ex-spring
2.force can change the direction of a moving object ex-wife we hit a ball we pally force and position changes.
3.force can change the speed of a moving object. ex-if someone hit the ball and we catch it, its speed changes
3. both will equally sink because their length and weight are same.
4.the distance of the water touching the ground from the bottom of can is same for all 3 holes
=range is square root of 4 times h and (H-h)
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