A body moves from point P(3,4) to Q (5,7). Its displacement vector would be:
Correct answer: D. 2i+3j
- A. 8i+10j
- B. 8i+2j
- C. 2i-2j
- D. 2i+3j
Explanation
Option D is correct.The displacement vector is the difference between the initial and final positions of the body. In this case, The initial position is P(3,4) and The final position is Q(5,7). The displacement vector can be calculated using the following formula: displacement = (final position - initial position) Placing the values in the formula, we get: displacement = (5i,7j) - (3i,4j) = (2i,3j) Therefore, the displacement vector is (2,3). This means that the body has moved 2 units to the right and 3 units up.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Force and Motion questions
A car of mass 1000 kg moving with 25 ms-1 collide straight with stationary track of mass 1500kg, and start moving together. Find the velocity of track.
The P.E gained by projectile when it reaches at maximum height is expressed by equation;
Angle between action and reaction forces is:
A body covers half of the distance with 2ms-1 and other half with 4ms-1then average speed is:
A missile is fired for maximum range with an initial velocity of 20 m/s. If g=10m/s2, the range of the missle is:
A ball is projected horizontally from the top of a cliff on the surface of the earth with a speed of 40 ms-1. Assuming that there is no air resistance, what will be its speed after 3s?