A particle is travelling along a straight line OX. The distance x (in metre) of the particle from O at a time ′t′ is given by x = 37 +27t - t3 , where 't' is time in seconds. The distance of the particle from O, when it comes to rest is:
Correct answer: B. 91 m
- A. 81 m
- B. 91 m
- C. 101 m
- D. 111 m
Explanation
Correct option is 91 m. (The solution involves calculus, which most pre-medical students will not be familiar with. This type of question is highly unlikely to be asked.)
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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.
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