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Solve the all parts of given question:
Question: A 1500 kg trailer is being pulled by a truck at a speed of 60 km/h.
Part A: What is the trailer's kinetic energy (in J)?
Part B: Now the truck speeds up so that the trailer's kinetic energy doubles. What is the trailer's new speed?
Part C: if the truck and trailer covered a distance of 170 m while they were accelerating, what was the magnitude of the average force exerted by the truck on the trailer? You may ignore friction and air resistance. (HINT: use energy, NOT kinematics)
Having trouble with this physics question, can you please explain with the answer.
A playground is on the flat roof of a city school, 5.9 m above the street below (see figure). The vertical wall of the building is h = 7.40 m high, Find the speed at which the ball was launched
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.9 m/s due north relative to the water. If the river is 362 m wide, explain how far downstream is the boat when it reaches the north shore?
if the radius of the equipotential surface of a point charge is 10.5 m, what are the magnitude and sign of the point charge
julio throws his 0.20kg football in the living room and knocksover his mothers 0.80 kg antique vase. how fast did julio throw the football
A particle initially located at the origin has an acceleration of = 4.00 m/s2 and an initial velocity of i = 6.00 m/s. Find the speed of the particle at t = 3.00 s
A cosmic ray electron moves at 7.75 x 106 meter per second perpendicular to the earth's magnetic field at an altitude where field strength is 1 x 10-5 T. Obtain the radius of the circular path the electron follows
A rock is thrown from the edge of a cliff to the ground 24.0 m below. The rock has an initial velocity of 13.5 m/s, directed 24.0° above the horizontal. Find the velocity of the rock just before it strikes the ground
A 250g ice cube at -10?C is placed in an aluminum cup whose initial temperature is 70?C. The system comes to an equilibrium temperature of 20?C
One hundred k mol of a gas containing 94.4 mole% methane, 3.40% ethane, 0.60% propane, and 0.50 percent butane is to be burned with 17% excess air. Calculate the required molar flow rate of the air.
Radiation of intensity 1.00 kW/m2 is incident on an area perpendicular to the incoming light. What is the resulting power per unit area now reaching the surface
An archer pulls her bowstring back 0.430 m by exerting a force that increases uniformly from zero to 232 N. What is the equivalent spring constant of the bow
A bullet of mass 0.002 kg moving at 421 m/s impacts a large fixed block of wood and travels 6.1 cm before coming to rest. find the force exerted by the wood on the bullet
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