Question
A mass is projected horizontally with a velocity u from a tower. Find the horizontal length it will cover from the foot of the tower?

Answer

If h is the height of the tower, the time taken to reach the ground is $\text{t}=\sqrt{\frac{2\text{h}}{\text{g}}}.$ Since the horizontal velocity u is same everywhere, the distance covered is $\text{ut}=\text{u}\sqrt{\frac{2\text{h}}{\text{g}}}.$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Two particles located at a point begin to move with velocities $4m s^{-1}$ and $1m s^{-1}$ horizontally in opposite directions. Determine the time when their velocity vectors become perpendicular. Assume that the motion takes place in a uniform gravitational field of strength g.
A tuning fork A, marked 512Hz, produces 5 beats per second, where sounded with another unmarked tuning fork B. If B is loaded with wax the number of beats is again 5 per second. What is the frequency of the tuning fork B when not loaded?
Is there any meaning of "Weight of the earth"?
Explain why The angle of contact of mercury with glass is obtuse, while that of water with glass is acute.
Two strips of metal are riveted together at their ends by four rivets, each of diameter 6.0 mm . What is the maximum tension that can be exerted by the riveted strip if the shearing stress on the rivet is not to exceed $6.9 \times 10^7 \mathrm{~Pa}$ ?
Assume that each rivet is to carry one quarter of the load.
Using the expression for pressure exerted by a gas, deduce Avogadro's law and Graham's law of diffusion.
Is it possible to increase the temperature of a gas without adding heat to it? Explain.
Consider a sunlike star at a distance of 2 parsecs. When it is seen through a telescope with 100 magnification, what should be the angular size of the star? Sun appears to be $\Big(\frac{1}{2}\Big)^0$ from the earth. Due to atmospheric fluctuations, eye can’t resolve objects smaller than 1 arc minute.
A uniform tube closed at one end, contains a pellet of mercury $10cm$ long. When the tube is kept vertically with the closed-end upward, the length of the air column trapped is $20cm$. Find the length of the air column trapped when the tube is inverted so that the closedend goes down. Atmospheric pressure = $75cm$ of mercury.
The acceleration due to gravity on the moon is only one-sixth of that on earth. Suppose the average density of both are same, what would be the ratio of the radii of the moon and the earth?