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...
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...
velocity time graph
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...
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...
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
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...
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...
If Justin races his Checy S-10 down Highway 4 for 2,560 meters in 60 seconds, what is his average speed(velocity)?
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.
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.
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...
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.
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 rock is dropped from a height of 256 ft and falls toward the earth in a straight line. In t seconds, the rock drops a distance of s = 16t^2 ft. Answer the following showing all work. a...
an object is fired vertically upward with an initial velocity v(0) = v0 from an initial position s(0)=s0. Answer part A and B below. A. For v0=39.2m/s and s0=27m find the position...
A rock is dropped. Find its average velocity from t = 3 seconds to t = 5 seconds. (Enter feet/sec)