Which of the following statements are true? 1.The length along the direction of

Question

Which of the following statements are true?
1.The length along the direction of motion of a moving object is shorter than when the object is at rest.
2.The proper time interval is the shortest time interval measured in any inertial reference frame.
3.The proper length of a car 5 meters long will be shorter than 5 meters when the car is moving.
4.All clocks moving relative to the observer run slow.
5.The proper time interval for an event depends upon the speed of the observer.

Please answer all 5 with a true or false response.

Explanation / Answer

1) according to length contraction The length along the direction of motion of a moving object is shorter than when the object is at rest. TRUE.

2)According to time dialation,The proper time interval is the shortest time interval measured in any inertial reference frame. TRUE .

3)The proper length of a car 5 meters long will be shorter than 5 meters when the car is moving. TRUE because is car can move with a velocity very much less than the speed of light. it varies when the car is movint with a relative speed.

4) All clocks moving relative to the observer run slow TRUE

5)The proper time interval for an event depends upon the speed of the observer true

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