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Question 31 1 pts A 1.0-kg ball falls to the floor. When it is 0.70m above the floor, its potential energy exactly equa...
Question 28 1 pts What is the gravitational potential energy of a 1- kg block at rest on a table 1 m above the floor? 01 9.8 O 32 O 11.8) 00 Question 29 1 pts A particle is moved from point A to point B against a conservative force. Which statement is true about the work done? O cannot be recovered by moving it from B to A O does not depend on the path taken between A and...
Question 12 1 pts Tony has a mass of 75 kg and is doing skateboard tricks on a half pipe ramp. At the apex of one trick, he is motionless at a height h1=5.0 meters above the bottom of the ramp. He falls off the skateboard while landing and slides down the ramp and then he reaches a height h2=1.5 m up the other side of the ramp before stopping. What is the work in Joules that was done on...
Question 1 1 pts What is the kinetic energy of a man who weighs 980N who is riding in a car traveling 40 km per hour? Express your answer in Joules, but don't type the unit in the answer box. Round to the nearest whole number. (Careful with the units) 1 pts Astudent slides her 80.0-kg desk across the level floor of her dormitory room a distance 4.00 m at constant speed. If the coefficient of kinetic friction between the...
DQuestion 34 1 pts A5 kg projectile is fired at an angle of 25° above the horizontal. Its initial velocity is 200 m/s and just before it hits the ground its velocity is 150 m/s. What is the change in the mechanical energy of the projectile? O +19,000J O-19,000 J +44,000J O -44,000J 0 Question 35 1 pts Two blocks are released from the toop of a tower One falls straight down while the other slides down a frictionless ramp....