The distance travelled by a moving car with velocity 15m/s in 2s, decelerates at 2m/s2 is equal to:
Correct answer: D. 26m
- A. 30m
- B. 16m
- C. 34m
- D. 26m
Explanation
This is a question from a body moving at constant acceleration for that we have 3 equations of motion vf=vi + at S=vit +1/2at2 2aS=vf2 - vi2 Here S refers to a displacement Vi is the initial velocity Vf is the final velocity t is for time a is for acceleration According to the data given, the most suitable equation to be used here is the 2nd equation of motion, SOL: S=vit+1/2at2 =15x2+½x(-2)22 -ve sign indicates that the car is decelerating =30-4 =26m Hence the correct answer is option D.
Last updated
About Acceleration
Acceleration measures the rate at which velocity changes with time, including changes in speed, direction or both. Work includes average and instantaneous acceleration, the relation a = Δv/Δt, uniform acceleration equations, and interpreting velocity time and displacement time graphs, with acceleration carefully distinguished from velocity.
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
A ball is dropped from the roof of a very tall building.What is its velocity after falling for 5.0s?
A ball is thrown vertically upward with a velocity of 98 m/s. If it takes 10 seconds to reach the highest point then the acceleration of the ball is:
A ball is thrown vertically upward with a velocity of 98 m/s. if it takes 10 seconds to reach the highest point then the acceleration of the ball is:
A ball of mass 5 kg is dropped from a height of 78.4 m. The time taken by the ball to hit the ground is:
A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10 ?