Driving slowly down a two-lane highway a large transport truck passes me going the same way as I am. As he does physics flashes before my eyes, and I think Bernoulli’s principle with pressure and...
Driving slowly down a two-lane highway a large transport truck passes me going the same way as I am. As he does physics flashes before my eyes, and I think Bernoulli’s principle with pressure and...
velocity time graph
In considering density and buoyancy, a helium balloon floats in air even as wood floats on water. A father was bringing home balloons for a party and had attached the balloons to the seat of a van...
The new blade on my table saw has a radius of 15.0 cm. My table saw has a maximum speed of 3750 rpm. If it takes 2.50 seconds to get up to this final speed, what is the tangential velocity of the...
Dart hits wheel. In terms of m, M, v0, and R (of wheel), find: A) angular speed of wheel B) ratios of initial and final kinetic energies
sitting in a tree 25 feet above the ground, your younger brother listens to your MP3 player. You ask him to give it to you, and he throws it to the ground at a speed of 20 feet/second. How long does...
A toy rocket is launched from the ground level with an initial vertical velocity of 96 ft/s. After how many seconds will the rocket hit the ground?
She wishes to swim across a river to a point directly opposite from where she is standing.?The river is moving at a rate of 5km/h. Explain, with the use of a diagram, why this is not possible. Isn't...
In physics, transitional kinetic energy E(in joules) is given by the equation: E=1/2mv2,where m represents mass(in kilograms), and v the velocity (in meters per second). Find the velocity of a thrown...
An airplane flies eastward and always accelerates at a constant rate. At one position along its path it has a velocity of 33.5 m/s, it then flies a further distance of 43300 m and afterwards its velocity...
A baseball player hits a foul ball straight up in the air from a height of four feet off the ground. The initial velocity as the ball comes off the bat is 130 feet per second. The motion of ball can...
the formula s(t) = −16t2 + v0t. (a) If the object hits the ground after 12 seconds, find its initial velocity v0. v0 = ft/sec (b) Find...
I was given this formula: s=-16t2+v0t+S0 A rubber duckie is thrown into the air from the ground with an initial velocity of 100ft/s. Neglecting air resistaqnce, what is...
A car drives down a road in such a way that its velocity (in m/s) at time t (seconds) is v(t)=2t1/2+5 Find the car's average velocity (in m/s) between t = 2 and t = 6.
If Justin races his Checy S-10 down Highway 4 for 2,560 meters in 60 seconds, what is his average speed(velocity)?
A boat of mass 300 kg was being drifted by the current of the river i.e. the boat was moving at the same speed as the current. A boy with mass of 24 kg was standing still on the boat. Suddenly that...
A plane can fly 365 mph in still air. If it can fly 210 miles downwind in the same amount of time it can fly 155 miles upwind, find the velocity of the wind.
The displacement of a particle in centimetres is given by y=8 sin (2πft). If f=20 Hz, find the displacement and the velocity of the particle at a time t=0.01 s and 0.07 s.
Two closed organ pipes of length 0.5 m and 0.525 m are sounded together and produce 6 beats per second. What is the velocity of sound in the medium with which the organ pipes are filled?
A certain string has a linear mass density of 0.25 kg/m and is stretched with a tension of 25 N. One end is given a sinusoidal motion with frequency 5 Hz and amplitude 0.01m. At time t=0, the end...