A magpie flying at a constant velocity of 7.50m/s foward and is carrying a 0.165kg sandwich at a height of 27.0m above the ground the total mechanical energy of the sandwich is

What property of an object determines its inertia?

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?