Physics, 02.11.2019 03:31 papasully1
For each case, identify the force (including its direction) that causes the acceleration. (a) a sprinter at the very start of the race. the gravitation force by earth on the sprinter the backward direction the normal force of the block on the sprinter the forward direction (b) a hockey puck skidding freely but slowly coming to rest on the ice. the opposite direction to the velocity the frictional force by the ice on the puck the parallel direction to the velocity the gravitation force by earth on the puck (c) a long fly ball at the top of its arc. the gravitation force by earth on the ball the upward direction the downward direction the frictional force by the air on the ball (d) a bungee jumper at the very bottom of her descent. the upward direction the gravitation force by earth on the jumper the force exerted by the bungee cord on the jumper the downward direction
Answers: 3
Physics, 21.06.2019 15:00
Ineed with these last two questions: 1) what are two types of cold air masses that influence the weather in north america? name them and describe their humidity. 2) describe the motion of a cold air mass and a warm air mass and the weather you would expect at a warm front and an occluded front.
Answers: 1
Physics, 22.06.2019 03:00
Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx
Answers: 1
Physics, 22.06.2019 11:20
If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s
Answers: 1
Physics, 22.06.2019 19:00
Friction removes energy from objects in motion. which statement best describes how this works? a) friction transforms ke into thermal energy b) friction transfers thermal energy to ke c) friction transforms te into pe d) friction transforms pe into ke e) friction transfers ke into pe
Answers: 1
For each case, identify the force (including its direction) that causes the acceleration. (a) a spri...
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