What is the displacement of a person who walks 2km East then 2km North then 2 km west and then 2 km south?
Correct answer: A. 0 km
- A. 0 km
- B. 8 km
- C. 4 km
- D. None of these
Explanation
The correct answer is Option A: 0 km. Displacement is the straight-line distance from the starting point to the ending point, along with the direction. In this case, the person walks in a complete loop back to the starting point, resulting in a displacement of 0 km. Option B incorrectly identifies 8 km as the displacement, which is actually the total path length or distance traveled. Option C suggests 4 km, which is incorrect as the net change in position is zero. Option D suggests that none of the options are correct, which is inaccurate since Option A is indeed correct.
Last updated
About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
Practise Force and Motion
1,416 free Force and Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
(1, 1, 1) . (2, 2, 2)
1st law of motion gives the definition of:
2nd law of motion measures which quantity?
7.0 kg bowling ball experience a net force of 5.0N. What will be its acceleration?
A 0.2 kg rubber ball is dropped from the window of a building. It strikes the sidewalk below at 30m/s and rebounds up at 20m/s. The impulse on the ball during the collision is: