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An object moves with constant acceleration 4.80 m/s2 and over a time interval reaches a final velocity of 12.6 m/s. (a) If its initial velocity is 6.3 m/s, what is its displacement during the time interval? (b) What is the distance it travels during this interval? (c) If its initial velocity is -6.3 m/s, what is its displacement during the time interval? (d) What is the total distance it travels during the interval in part (c)?
A 0.025 kg golf ball moving at 21.0 m/s crashes throughout the window of a house in 2.0 10-4 s. After the crash, ball continues in the same direction with a speed of 10 m/s. assuming the force exerted on the ball by the window was constant, what w..
As part of a safety investigation, two 1400 cars travelling at 18 are crashed into different barriers. Find out the average forces exerted on (a) car that hits a line of water barrels and takes 1.8 to stop, and (b) car that hits a concrete barrier an..
A flight attendant pulls her 70.0N flight bag a distance of 244 m along a level airport floor at a constant speed. The force she exerts is 36N at an angle of 52° above the horizontal. Find the work she does on the flight bag.
An explosive charge imparts a velocity of 10,350 feet per second to a mortar as it exits the muzzle of mortar. If the mortar is elevated at 80 degrees what are the horizontal and vertical velocities on the mortar shell.
An electron is shot upward directly perpendicular to the lower plate of a parallel plate capacitor. Its initial velocity is 3.0 x 104 m/s. What must be the potential of the upper plate if the electron stops just before reaching it? The lower plate..
Six pendulums of mass and length are released from rest at the similar angle from vertical. Rank the pendulums according to the number of complete cycles of motion each pendulum goes through per minute.
Find tension in the back muscle and the compressional force
what is the velocity of plane with respect to the ground. A nonconducting sphere has radius R = 2.53 cm and uniformly distributed charge q = +6.00 fC. Take an electric potential at the sphere's center to be V0 = 0.
What is the tension in each cable if angle between each and the direction the crate moves is 12°.
What must be the value of the putty mass m so that the amplitude after the collision is one-half the original amplitude.
Two long, parallel wires, each having a mass per unit length of 40 g/m, are supported in a horizontal plane by strings 6.00cm long. When both wires carry the same current I.
A movie stuntwoman drops from a helicopter that is 29.0 above ground and is moving with a constant velocity whose components are 8.00 upward and 18.0 horizontal and toward south. You can ignore air resistance.Where on the ground (relative to the p..
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