Consider a toy rocket that undergoes one dimensional motion. it is launched from rest straight up from the ground and rises under constant acceleration for δt1 seconds, where it loses power. it hits the earth δt2 seconds later. you can consider δt1 = t1 – t0 and δt2 = t2 – t1. what was the toy rocket’s acceleration before t1?

Lin yao looks at the back of a spoon. how should she describe her reflection? upside down and smaller upside down and larger right-side up and smaller right-side up and larger

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?

Air conditioners not only cool air, but dry it as well. suppose that a room in a home measures 5.0m×9.0m×2.4m . if the outdoor temperature is 30 ∘c and the vapor pressure of water in the air is 85 % of the vapor pressure of water at this temperature, what mass of water must be removed from the air each time the volume of air in the room is cycled through the air conditioner? the vapor pressure for water at 30 ∘c is 31.8 torr.