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1. An object is thrown vertically upward with an initial velocity v0. At the highest point in the object's trajectory:
a. its velocity and acceleration are both zero.b. its velocity and acceleration are both nonzero.c. its velocity is zeor, and its acceleration is nonzero and directed downward.d. its velocity is zeor, and its acceleration is nonzero and directed upward.e. its acceleration is zero, and its velocity is nonzero and directed downward.
2. A train starts from rest and accelerates uniformly at 0.096 m/s^2, until it has traveled 3.0 km. The train then moves at a constant speed for 8.0 minutes. The distance traveled by the train in the entire trip is:
a. 7.6 kmb. 8.5 kmc. 9.1 kmd. 11.5 kme. 14.5 km
3. A prejectile is fired from ground level on level terrain. The initial velocity components are vox= 100 m/s and v0y = 49 m/s. How far from the initial position, in the horizontal direction, does the projectile reach its maximum height?
a. 120 mb. 500 mc. 380 md. 620 me. not enough information given to determine this
What is the average energy of the system after many measurements
Released from rest at the same height, a thin spherical shell and solid sphere of the same mass m and radius R roll without slipping down an incline through the same vertical drop H. Each is moving horizontally as it leaves the ramp.
A freight train has a mass of 29000000 kilogram. If the locomotive can exert a constant pull of 530000 Newton's, find how long would it take to increase the speed of the train from rest to 89.9 km/h
Two identical metal spheres and are connected by a plastic rod. Both are at first neutral. 6.0×10^12 electrons are added to sphere , then the connecting rod is removed.
a point source of light is 65.3 cm below the surface of a body of water. find the diameter of the circle at the surface
Avoiding air resistance, what is the magnitude of the total velocity of the package at the moment it is thrown as seen by an observer on the ground? Answer in units of m/s.
The coefficient of kinetic friction for wood sliding on wood is 0.20. What is the final speed of the bullet
assume that you are diving from 10 meters height in bathing area. how long does it take before you reach the water?no
Determine the maximum injection angle, that will result in the greatest downrange distance, R. Assume v = 10 m/s and g is approximated as g = 10 m/s2
A projectile is launched with a speed of 40 m/s at an angle of 60o above the horizontal. Use conservation of energy to estimate the maximum height reached by the projectile
a particle of rest mass mo with kinetic energy 15moc2 makes a perfectly inelastic collision with an identical particle
A 3.00-kHz tone is being produced by a speaker with a diameter of 0.160 m. find the change in the diffraction angle
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