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A bumper car with mass m1 = 109.0 kg is moving to the right with a velocity of v1 = 4.9 m/s. A second bumper car with mass m2 = 84.0 kg is moving to the left with a velocity of v2 = -3.6 m/s. The two cars have an elastic collision. Assume the surface is frictionless.1) What is the velocity of the center of mass of the system?2) What is the initial velocity of car 1 in the center-of-mass reference frame?
An object with a charge of 4.6 MicroC moves from moves from the top to the bottom of this page at a speed of 16.6 m/s. What is the direction of this magnetic field force
The driver of a car slams on the brakes when he sees a tree blocking the road. With what speed does the car then strike the tree
The turbine and associated rotating parts of a jet engine have a total moment of inertia of 30 kg m2. Find the work done by the net torque
A solid puck with radius R1 = 0.9 m and mass M = 1.4 kg is sitting on a frictionless table. What is the angular acceleration of the puck in rad/s2
The sound intensity 44 m from a wailing tornado siren is 0.10 W/m2 -. Estimate the maximum distance at which the siren can be heard
a worker exposure to noise in a given plant is measured as follows during various time periods in an 8-hour shifta.
A 119.0-kg block is on a horizontal frictionless surface, on top of it is a second smaller block of 55.0-kg. Find the coefficient of kinetic friction between the two blocks
The New England Merchants Bank Building in Boston is 152 m high. What is the total distance, side to side, that the top of the building moves during such an oscillation
A Superball is dropped from a height of 2.7 and rebounds off the floor to a height of 2.2. find the magnitude of the ball's average acceleration due to the floor
Two children with masses of 23 and 41 kg are sitting on a balanced seesaw. If the lighter child is sitting 3 m from the center, where is the heavier child sitting from the center
An archer shoots an arrow with a velocity of 30 m/s at an angle of 20 degrees with respect to the horizontal. What is the initial speed of the apple
A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0.793 m and 2.97 kg, what is its rotational kinetic energy
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