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A bicycle rider ( mass of bike and rider is 85kg ) travelling eastat 23ms^-1 changes its velocity to 23ms^-1 south in 5 seconds .
1) calculate the acceleration .2) calculate the change in momentum3)calculate the impulse given to the bike and rider
A 20.00 kg child is on a swing that hangs from 3 m long chains. What is her maximum speed if she swings out to a 45.0 o angle.
The Moon moves noticeably on the celestial sphere over the space of a single night. To show this, calculate how long it takes the Moon to move through an angle equal to its own angular diameter (0.5 degrees) against the background of the stars. Gi..
You are using a grating with 1000 lines per millimeter; the angle for the first order maxima is ? = 16°. Find the angle for the second order maxima
On a banked race track, the smallest circular path on which cars can move has a radius of 112m, while the largest has a radius of 165m, as the drawing illustrates. The height of the outer wall is 18m. The largest speed at which cars can move on thi..
A bowler throws a bowling ball of radius R = 11 cm along a lane. The ball (the figure) slides on the lane with initial speed vcom,0 = 7.9 m/s and initial angular speed ?0 = 0. The coefficient of kinetic friction between the ball and the lane is 0...
A rocket moves upward, starting from rest with an acceleration of 33.4 m/s2 for 3.47 s. It runs out of fuel at the end of the 3.47 s but does not stop. How high does it rise above the ground.
A wire is made by attaching two segments together, end to end. One segment is made of aluminum and the other is steel. What fraction of the length is aluminum
An object moves along the x axis according to the equation x = 3.35t2 ? 2.00t + 3.00, At what time is the object at rest
A rod is measured to be exactly 19.80 cm long using a steel ruler at a temperature of 21.1°C. What is the coefficient of thermal expansion for the material of which the rod is made
Expalin how many revolutions will the car have gone through when the magnitude of its total acceleration is 2.00 m/s^2?
Carbon 12 is defined such that 12g is one mole. So if a diamond is 37.5 g, how many moles of carbon are in it? How many molecules of carbon are in it
A wheel free to rotate about its axis that is not frictionless is initially at rest. A constant external torque of +59 N·m is applied to the wheel for 15 s, giving the wheel an angular velocity of +530 rev/min. The external torque is then removed,..
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