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In 1971, Apollo 15 astronaut David Scott dropped a hammer and feather on the moon. The feather fell a distance of 0.73 m in the first second.
A) Did the hammer fall a larger or shorter distance in that second? Explain.
B) What is the acceleration due to gravity on the moon?
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A novice skier, starting from rest, slides down a frictionless 34° incline whose vertical height is 128 m. How fast is she going when she reaches the bottom.
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A lamp which is 9.0 cm tall is in front of a concave mirror which has a focal length of 53.0 cm. (a) How tall is the lamp's image if the lamp is a distance of 26.5 cm from the mirror (include sign if negative)
During 9.73 seconds a motorcyclist changes his velocity from v1,x = -35.5 m/s and v1,y = 12.5 m/s to v2,x =-21.1 m/s and v2,y = 27.5 m/s. Find the components of the motorcycle\'s average acceleration during this process, aav,x and aav,y.
A gymnast of mass 56.0 {rm kg} hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch. Use the value 9.81 {rm m/s^2} for the acceleration of gravity.
an electric field of 210000 nc points due west at a certain spot. what is the magnitude of the force that acts on a
the electric field points due east and has a magnitude of 3.0 x 105 nc. the mass of the electron is 9.11 x 10-31 kg and
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