1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard X
Physics
Kinetic Energy
When a cars s...
Question
When a cars speed doubles, what happens to its kinetic energy?
A
It is quartered
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
It is halved
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
It is unchanged
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
It is doubled
No worries! We‘ve got your back. Try BYJU‘S free classes today!
E
It is quadrupled
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution
The correct option is
E
It is quadrupled
Initial kinetic energy
K
=
1
2
m
v
2
New speed of the car
v
′
=
2
v
Thus new kinetic energy
K
′
=
1
2
m
(
v
′
)
2
=
1
2
m
(
2
v
)
2
=
4
K
Thus kinetic energy is quadrupled.
Suggest Corrections
0
Similar questions
Q.
The mass of a body is halved and its speed is doubled. What happens to the kinetic energy of the body?
Q.
What happens to its kinetic energy, when the speed of car gets doubled?
Q.
If the speed of a car is halved, how does its kinetic energy change?
Q.
What happens to the area of triangle when its base is doubled, height is halved?
Q.
Assertion (A): The kinetic energy of a body is quadrupled, when its velocity is doubled
Reason (R) : Kinetic energy is proportional to square of velocity
View More
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Related Videos
Kinetic Energy
PHYSICS
Watch in App
Explore more
Kinetic Energy
Standard X Physics
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Solve
Textbooks
Question Papers
Install app