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Q1. A cart on a linear air track has a uniform acceleration of 0.172m/s^2. Use Equation 1 to find the velocity of the cart 4.00 seconds after it is released from rest. Show your work.
Q2. A worker pulls horizontally on a crate on a rough horizontal floor, causing it to move forward with constant velocity. In the figure, force is the pull of the worker and force is the force of friction due to the floor.
Q3. A car travelling 85km/hr strikes a tree. The front end of the car compresses and the driver comes to rest after travelling 0.80m. What was the average acceleration of the driver during the collision? State the answer in terms of "g's," where 1.00 g = 9.80 m/s^2.
A baseball is bunted down the third-base line leaving the bat from a height of 0.850m with an initial velocity of 4.00m/s at an angle of 37.87° above horizontal.
What are the velocities of the two people after the snowball is exchanged. What is the greatest kinetic energy of the electrons removed from the cathode by this light.
A soccer player 'heads' the size 5 ball deflecting it by 46.0°, and keeps its speed of 15.90 m/s constant. A size 5 ball has a mass of approximately 0.421 kg. What is the magnitude of the impulse which the player must impart to the ball.
Two 12-cm-diameter charged rings face each other, 17.0 apart. Both rings are charged to + 40.0. What is the electric field strength at the midpoint between two rings.
A 3.10-m-long, 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 73.0 kg construction worker stands at the far end of the beam. What is the magnitude of torque abou..
Every day our Earth receives 1.55×1022 J energy from the Sun. If we were able to use 0.85 percent of this energy to accelerate spaceships, then how various missions will be possible in one year.
A 73 kg parachutist descends during a vertical height of 420 m with constant speed. Find the increase in entropy produced by the parachutist; assume the air temperature is 21°C.
An object is oscilliating on a spring with a period of 4.60 s . At time t= 0.00 s the object has zero speed and is at x = 8.30 cm . What is the acceleration of the object at t= 2.50 s ?
A point moves along the x-axis with its position, x, at time t given by x(t) = t3 - 3t2 + 2t - 1. Which of the following is the acceleration when t = 2?
Calculate the gradient of V in each region
A particular organ pipe can resonate at 231 Hz, 385 Hz, and 539 Hz, but not at any other frequencies in between. Is it an open or a closed pipe? What is the fundamental frequency of this pipe.
A person's prescription for her new bifocal glasses calls for a refractive power of -0.461 diopters in the distance-vision part, and a power of +1.83 diopters in the close-vision part. Find the near and far points of this person's uncorrected visi..
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