Question

✯How much work should be done on a bicycle of mass 20kg to increase its speed from 2ms^-1 to 4ms^-1.

➻Don't spam ​

Answer 1

Answer:

W=F×D

f =Force, d = displacement

W=1/2 ×m × v^2

= 1/2 × 20 × (v2^2-v1^2

=10× (4^2-2^2)

=10 × 12 =120 J

If you like my answer Please mark me as brainliest. . . . . fast

Answer 2

QUESTION :-

✯How much work should be done on a bicycle of mass 20kg to increase its speed from 2ms^-1 to 4ms^-1.

ANSWER:-

GIVEN :-

mass=20kg.

FIND:-

WORK

CALCULATION:-

W=F×D.

.°.W=½MV².

PUT VALUES.

W=20×(V2-V1)

W=20×(4²-2²)

W=20×10

W=120J.

.°.WORK=120j.