Asked in Premeth MDCAT 2025 — Work and Energy, Atomic Structure, Nouns 2025

A force of 1500 N is acting horizontally on a vehicle of mass 200 kg and the vehicle starts its motion from rest. What will be the speed of the vehicle when it covers a distance of 30 m?

Correct answer: B. 21 m s-1

  • A. 17 m s-1
  • B. 21 m s-1
  • C. 25 m s-1
  • D. 10 m s-1

Explanation

To determine the speed of the vehicle when it covers a distance of 30 m, we can use Newton's second law of motion:F = ma In this case, the force acting on the vehicle is 1500 N, and the mass of the vehicle is 200 kg. We can rearrange the equation to solve for acceleration: a = F / m a = 1500 N / 200 kg a = 7.5 m/s² Now, we can use the equation for uniform acceleration to find the final velocity (v) of the vehicle when it covers a distance of 30 m: v² = u² + 2as v² = 0² + 2 x 7.5 m/s² x 30 m v² = 2 x 7.5 m/s² x 30 m v² = 450 m²/s² v ≈ 21.21 m/s

Written and checked by , contributorLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Kinetic Energy

Kinetic energy is the energy of motion, given for a nonrelativistic object by K = ½mv², so it depends on mass and the square of speed. Questions connect kinetic energy with work through the work energy theorem, calculate changes in kinetic energy, and distinguish it from momentum and potential energy.

Practise Work and Energy

748 free Work and Energy 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 Kinetic Energy questions