State and define the SI unit of force. Q2. When balanced forces act on a stationary body, then the body is deformed True or False Q3. Q4. Q5. Why people sitting in bus fall backward when bus suddenly starts? Why leaves fall when we are shacking branch of tree? What will be the momentum of a stone having mass of 10 kg when it is thrown with a velocity of 2 m/s?
Answers
Answer:
The SI unit of force is Newton. 1 Newton is that force which is required to accelerate an object of 1 kilogram of mass at the rate of 1 metre per second
Explanation:
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Answer:
1)Force is anything that can change the shape size and dimension of the object. The S.I unit of force is Newton.
2)False
3)People when sit in the bus their whole body is in state of rest When the bus start moving their( imagine and the body in two parts= upper and lower) upper body still is in state of rest but their body attached to the bus come suddenly in state of motion. Thus lower body moves forward and upper body at rest so we tends to fall backward.
3)When the tree is at rest it's leave is also at rest. When we shake the branch the leaves still at rest ( due to inertia of rest) the branch immediately come in motion. Thus leaves falls.
4) F = M × A.
F = 10 × 2
F = 20 m/s^2