⇦ | ⇨ |
A boy standing at top of a tower of 20 m height drops a stone.assuming g=10 ms⁻²,the velocity with which it hits the ground is
Options
(a) 20 m/s
(b) 40 m/s
(c) 5 m/s
(d) 10 m/s
Correct Answer:
20 m/s
Explanation:
Let, v²=u²+2gh
v= is the final velocity
u= is the initial velocity
g= is the acceleration
h= is the distance
Then, u =0
.·. v²=0²+2gh
v=√2gh
Given, g=10 m/s², h=20 m
.·. v=√2x10x20
v=20 m.
Related Questions: - Aperture of human eye is 0.2 cm. The minimum magnifying power of a visual
- An electron revolves in a circle at the rate of 10¹⁹ rounds per second.
- The depletion layer in the p-n junction region is caused by
- A point performs simple harmonic oscillation of period T and the equation of motion
- The logic behind NOR gate is that it gives
Difficulty Level: Easy
(1008)
Topics: Motion in Straight Line
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Aperture of human eye is 0.2 cm. The minimum magnifying power of a visual
- An electron revolves in a circle at the rate of 10¹⁹ rounds per second.
- The depletion layer in the p-n junction region is caused by
- A point performs simple harmonic oscillation of period T and the equation of motion
- The logic behind NOR gate is that it gives
Difficulty Level: Easy (1008)
Topics: Motion in Straight Line (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply