A 2.0 kg sloth hangs 5.0 m above the ground. What is the,
gravitational potential energy U of the sloth-Earth system If we
take the reference point y= 0 to be at the ground?
a) 10 J
b) 20 J
c) 49 J
® 98 J Gwilailmi mini may low-
6) I couldnt solve this pr
A cumin canister of mass m = 0.40 kg slides across a horizontal
frictionless counter with speed v = 0.50 m/s. It then runs into and
compresses a spring of spring constant k = 750 N/m. When the
canister is momentarily stopped by the spring, by what distanc
In a 1901 circus performance, Allo Dare Devil Diavolo introduced
the stunt of riding a bicycle In a l00p-the-l00p. Assuming that the
l00p is a circle with radius R: 2.7 m, what is the least speed v that
3.
b) 9.8 m/s _
c)51 m/s iwsl stall HAM
d) 26 m/s
About 65 million years ago, an asteroid with a diameter estimated
to be around 10-15 km fell to Earth, causing the extinction of
dinosaurs along with many other forms of life. if the mass of the
asteroid was 2X1015 kg and it was traveling at 20 km/second
A car has initial speed v0: 10.0 m/s. How far does a car take to
slide to a stop on a horizontal road if the coefficient of kinetic
friction is pk: 0.60, which is typical of regular tires on dry
pavement? Neglect any effect of the air on the car, assume t
. Consistency in Reporting
o A common question is whether managers are free to choose LIFO one period, FlF-Cl-the
next, and then go back to LIFO, depending on whether unit costs are rising or declining
during the period. Because this switching would make
A 500 9 block is sliding with constant speed along a frictionless
surface. It hits a horizontal spring that has a spring constant of
k = 2.5 N/cm, and compresses the spring 10 cm before
momentarily stopping. What is the speed of the block just
before it h
t A rope pulls a 200 kg sled up a slope at incline angle 9 = 30.0,
through distance d = 20.0 m. How much work is done by the
gravitational force acting on the sled?
a) -3.92><104 J
c) 1.96x103 J
d) 1.96x104 J
6) l couldnt solve this problem. gravitational
During a storm, a crate of crepe is sliding across a slick, oily
parking lot through a displacement of = (3.0m)f while a steady A
wind pushes against the crate with a force 13 = (2.0N)? +(6.0N) j .
The situation and coordinate axes are shown in the Figure