COMEDK · Physics · 4. Motion In Two Dimensions
A ball is projected horizontally with a velocity of \(5 \mathrm{~ms}^{-1}\) from the top of a building \(19.6 \mathrm{~m}\) high. How long will the ball take to hit the ground?
- A \(3 \mathrm{~s}\)
- B \(\sqrt{2} \mathrm{~s}\)
- C \(\sqrt{3} \mathrm{~s}\)
- D \(2 \mathrm{~s}\)
Answer & Solution
Correct Answer
(D) \(2 \mathrm{~s}\)
Step-by-step Solution
Detailed explanation
The motion of the ball in the vertical direction is governed by the equation of motion under constant acceleration due to gravity \(g = 9.8 \mathrm{~ms}^{-2}\). The vertical displacement \(h\) is given by \(h = u_y t + \dfrac{1}{2} g t^2\), where \(u_y\) is the initial vertical…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- The square of the resultant of two equal forces acting at a point is equal to three times their product. Angle between them isCOMEDK 2016 Medium
- The universal gas law \(\left(\frac{p V}{T}=\right.\) constant \()\) is applicable toCOMEDK 2014 Easy
- The best waves for emission of electrons from a surface areCOMEDK 2015 Easy
- A bullet of mass \(m\) hits a mass \(M\) and gets embedded in it. If the block rises to a height \(h\) as a result of this collision, the velocity of the bullet before collision isCOMEDK 2022 Medium
- A beam of incident parallel light falls on a diverging lens of focal length 20 cm in magnitude. If a converging lens of focal length 15 cm in magnitude is placed at a distance of 10 cm to the right of the diverging lens on the other side, then, the final image formed is:COMEDK 2025 Medium
- If only \(2 \%\) of the main current is to be passed through a galvanometer of resistance \(G\), then the resistance of shunt should beCOMEDK 2016 Easy
More PYQs from COMEDK
- Three vertices are chosen randomly from the nine vertices of a regular 9 -sided polygon. The probability that they form the vertices of an isosceles triangle, isCOMEDK 2023 Easy
- Let \(\mathrm{A}\) and \({B}\) be two events such that \(P(A / B)=\dfrac{1}{2}\) and \(P(B / A)=\dfrac{1}{3}\) and \(P(A \cap B)=\dfrac{1}{6}\) then, which one of the following is not true?COMEDK 2024 Medium
- The area of the region bounded by the line \(y = x + 2\) and the curve \(x = -y^2\) isCOMEDK 2026 Medium
- A newly prepared radioactive nuclide has a decay constant of \(6.93 \mathrm{~s}^{-1}\). What is the half-life of the nuclide?COMEDK 2022 Easy
- If \(\sec \theta=m\) and \(\tan \theta=n\), then \(\frac{1}{m}\left[(m+n)+\frac{1}{(m+n)}\right]=\)COMEDK 2016 Medium
- Arrangement of following compounds based on their boiling points in the increasing order. \(n\)-butane, 1-butanol, ethoxyethane and 1-propanol will beCOMEDK 2014 Medium