A body of mass 0.5kg starts from rest and experiences a force F = 8i + 6j. What will be the velocity at t = 1, if it covers a distance of 4 m.
Correct answer: A. 12m/s
- A. 12m/s
- B. 20m/s
- C. 17m/s
- D. None
Explanation
Here is the explanation of the correct optionvi = 0a = F/m=16i + 12j|a| = 20m/s2(Vf)2 = (vi)2 +2as= 0 + 2(20)(4)vf = √160 or 12.43
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Newton's Laws of Motion
Newton’s laws explain inertia, the relation between net force and acceleration, and action-reaction pairs. Questions involve free-body diagrams, balanced and unbalanced forces, F = ma, force as the rate of change of momentum, and identifying genuine third-law pairs, which act on different bodies.
Practise Force and Motion
1,421 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 Newton's Laws of Motion questions
A car of mass 1000kg is moving with speed 72km/h in a circular track of radius 100m. The centripetal force acting on it is
A car is moving with high velocity when it has a turn. A force acts on it outwardly because of
The apparent weight of a pilot when diving down in a jet plane with an acceleration of 9.8m/s² will become
A paratrooper falling with uniform velocity is an example of
A body is in equilibrium if the net force on it is
If the direction of an applied force F is reversed, then