1 Newton\'s first law Which of the following (more than one may be possible) are
ID: 1880686 • Letter: 1
Question
1 Newton's first law Which of the following (more than one may be possible) are true? i) An object cannot move unless there is a force acting on it. i) Newton's first law is about a body in motion at constant velocity; that body stays in motion unless acted on by a net external force. ii) If an object is at rest, then it means that there are no external forces acting on it in any direction. iv) Constant velocity includes the case when velocity is zero. v) The weight of an object on earth is equal to its mass. 2 Newton's second law a) Suppose that an object moves along a straight line to the left and slows down. Is point? Explain your answer b) Is it possible that the net force on an object is perpendicular to the direction of it's motion at one instant? Explain your answer.Explanation / Answer
1. False : According to Newton's 1st law
2 False: Newtons first law says that body will not change its state untill and unless some external forces is acting on it body may be at rest or may be in motion.
3. False : there are sevral example when body is in rest under influence of external force
.4 False:: constant velocity means velocity is not changing It may be 0 or non zero number
5. False : weight on earth is equal to product of mass and acceleration due to gravity
2.a. Yes there must be a non zero force should be acting in rightward direction in order to slowdown the object.
b. Yes it is possible that net force is perpendicular to the direction of motion and its example is circular motion where centripetal force is acting toward center but its motion is always perpendicular to force
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