an attacker at the base of a castle wall 3.65 m high throws a rock straight up with speed 7.40 m/s at a height of 1.55 m above the ground. (a) will the rock reach the top of the wall? (b) If so, what is the rock''s speed at the top? If not, what initial speed must the rock have to reach the top? (c) Find the change in the speed of a rock thrown straight down from the top of the wall at an initial speed of 7.40 m/s and moving between the same two points. (d) Does the change in the speed of the downward-moving rock agree with the magnitude of the speed change of the rock moving

Posted Date: 9/18/2012 8:06:48 PM | Location : United States

Ask an Expert

Related Discussions:- motion in one dimension, Assignment Help, Ask Question on motion in one dimension, Get Answer, Expert's Help, motion in one dimension Discussions

Write discussion on motion in one dimension
Your posts are moderated

Write your message here..

Related Questions

Law of reflection, The Law of Reflection While a ray of light strikes a... The Law of Reflection While a ray of light strikes a plane mirror and the light ray reflects off the mirror. Reflection includes a change within direction of the light ray. The

Excitation energy and potential, When the electron is known energy from ext... When the electron is known energy from external source, it goes to higher energy level. This process is called as excitation. The minimum energy needed to excite an atom is know

Magnetic effects of current, i have to make a written project on this topic... i have to make a written project on this topic please tell me something what should i make

What is the weight of the sled and rider, A sled and its rider are perched ... A sled and its rider are perched at the top o a hill that is 35 m tall. If the gravitational potential energy is 3.0 x 10 4 J. What is the weight of the sled and rider?

What is the net torque acting on the skater, An ice-skater with a moment of... An ice-skater with a moment of inertia of 1.1 kg/m2 starts to spin with her arms extended. After 25 s, she has an angular velocity of 15 rev/s. What is the net torque acting on

Law of conservation of Mechanical energy, Theory of law of conservation of ... Theory of law of conservation of mechanical energy

Determine the current in the capacitor, A 25nF capacitor is connected in pa... A 25nF capacitor is connected in parallel with a coil of resistance 2kΩ and inductance 0.20H across a 100V, 4 kHz supply. Determine (a) The current in the coil, (b) The cur

Assignment, to find coefficient of viscosity of a liquid using stok''s law to find coefficient of viscosity of a liquid using stok''s law

What is a starry sky, What is a starry sky? Probably one of the most be... What is a starry sky? Probably one of the most beautiful lighting effects which can be created that can be very simple or rather sophisticated. In its simplest form, a starry s

What are magnetic instruments, Magnetic instruments are used to find out th... Magnetic instruments are used to find out the magnetic moment of a bar magnet, find out the horizontal component of earth's magnetic field, compare the magnetic moments of two bar