An average human has a life expectancy of about 2×10^9 seconds. If a human's heart rate is 80 beats/ minute, determine the total number of beats a human would make in such a life time

A 15.0 kg object is moved from the second floor of a house 3.00 m above the ground to the first floor 0.30 m above the ground. What is the change in gravitational potential energy?

A plugged dishwasher sink with the dimensions of 60 cm × 50 cm × 30 cm is being filled with water from a faucet with an inner diameter of 2.5 cm. If it takes 40 seconds to fill the sink to its rim, estimate the volumetric flow of water coming out of the faucet. What is the average velocity of water coming out of the faucet?

A bicycle takes 8 seconds to accelerate at a constant rate from rest to a speed of 4 m/s. If the mass of the bicycle and rider together is 85 kg, what is the net force acting on the bicycle? (hint: first calculate acceleration)

Measure the mass flow rate of water coming out of a drinking fountain by placing a cup under the running water and by measuring the time that it took to fill the cup. Measure the mass of the water by subtracting the total mass from the mass of the cup.

One type of engine used in space travel is an ion thruster. These engines produce a low force that results in small acceleration changes. If an​ ion-thrust engine is used to apply 87 millinewtons​ [mN] of force on a satellite with a mass of 1.4 megagrams​ [Mg], what is the acceleration produced in units of meters per second squared ​[m/s2​]?