Question

13
A car is accelerated on a leveled road and attains a velocity 4 times of its initial velocity. In this
process, the kinetic energy of the car
(a) Becomes twice to that of the initial
b) Becomes four times to that of the initial
(c) Remains the same
(d) Becomes 16 times to that of the initial​

Answer 1

Answer:

d)becomes 16 times that of initial kinetic energy.

Explanation:

kinetic energy of a body is directly proportional to the square of the velocity.so, the kinetic energy will become 16 times its initial value if the velocity is increased 4 times.

Explanation:

Answer 2

Answer:

(d) Becomes 16 times to that of the initial

Explanation:

Initial KE = 1/2mv²

Final KE = 1/2m(4v)²

= 1/2m16v²

Which is 16 times of the initial.

Thank You.