A 3.00-kg stone is dropped from a 39.2 m high building. When the stone has fallen 19.6 m, the magnitude of the impulse the Earth has received from the gravitational force exerted by the stone is
a. 9.80 N s.
b. 19.6 N s.
c. 29.4 N s.
d. 58.8 N s.
e. 118 N s.
d
You might also like to view...
The larger the value of Hubble's constant, the more rapid the expansion of the universe and hence the younger the universe
Indicate whether the statement is true or false
Why can we never create energy?
A) because it is impossible to create the fundamental particles such as electrons and protons B) because energy is always conserved C) because of the equivalence of mass and energy D) because matter is always conserved E) Actually, we do create energy frequently in the lab.
A turntable has a moment of inertia of 3.00 × 10^?2 kg·m2 and spins freely on a frictionless bearing at 25.0 rev/min. A 0.600-kg ball of putty is dropped vertically onto the turntable and sticks at a point 0.100 m from the center. What is the new rate of rotation of the system?
a. 20.8 rev/min b. 22.7 rev/min c. 33.3 rev/min d. 27.2 rev/min
The gap between electrodes in a spark plug is 0.06 cm. In order to produce an electric spark in a gasoline-air mixture, the electric field must reach a value of 3 × 10^6 V/m. What minimum voltage must be supplied by the ignition circuit when starting the car?