Physicsmedium · Past Paper
A body dropped from height 'h' reaches the ground with velocity 'v'. If dropped from '4h', it reaches with:
A2v
B4v
Cv/2
Dv^2
✓ Correct Answer: A — 2v
v = sqrt(2gh). If h becomes 4h, v becomes sqrt(2g*4h) = 2*sqrt(2gh) = 2v.
Share this question
More from Physics
- Light of wavelength 6000 Angstroms in air enters a medium of refractive index 1.5. What is the wavelength in the medium?
- Which of the following materials is a good conductor of electricity?
- If the distance between two masses is tripled, the gravitational force becomes:
- If a force of 10 N acts on a body and the body is displaced by 2 m in the direction of the force, the work done is:
- Which of the following is a scalar quantity?