Apenguin slides at a constant velocity of 1.43 m/s down an icy incline. the incline slopes above the horizontal at an angle of 6.47°. at the bottom of the incline, the penguin slides onto a horizontal patch of ice. the coefficient of kinetic friction between the penguin and the ice is the same for the incline as for the horizontal patch. how much time is required for the penguin to slide to a halt after entering the horizontal patch of ice?

Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?

Which planet do you think would be easiest for humans to colonize some day?