Two packages at UPS start sliding down the 20 degree ramp shown in the figure. Package A has a mass of 4.00 kg and a coefficient of kinetic friction of 0.180. Package B has a mass of 11.5 kg and a coefficient of kinetic friction of 0.170. How long does it take package A to reach the bottom?

A17,250 kg rocket is pushed with a thrust of 6,450,284 n. what is the acceleration of the rocket?

While you are driving in the lane next to the curb on a multi-lane road the car on your left suddenly moves toward you lane. they are about toy crash into your front fender. you

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.