Auth­ors of a new stu­dy, pub­lished in the jour­nal of the amer­i­can med­i­cal as­socia­t­ion, noted that old­er peo­ple with bet­ter cardio-respiratory fit­ness ap­pear to live long­er than un­fit ones. better cardio-respiratory fitness can be linked directly to

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?

What is the coefficient of kinetic friction μk between the block and the tabletop?

An alarm clock has a current of 4.5 amps and a resistance of 3.2 ohms. what is the voltage in the circuit? a.1.4 volts b.0.71 volts c.14 volts d.46 volts