Physics · Forces and Motion
Work through this past-paper style MCQ, then read the full explanation. Practice more physics questions on mMCQ with adaptive practice and topic analytics.
The distance travelled by a moving car with velocity 15m/s in 2s, decelerates at 2m/s2 is equal to:
- A
30m
- B
16m
- C
34m
- D
26m
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.
As per the above calculation, this option is incorrect.
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
As per the above calculation, this option is incorrect.
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
As per the above calculation, this option is incorrect.
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
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
Tagged under Physics · Forces and Motion · 2017