Question

A 80-kg base runner begins his slide into second base when he is moving at a speed of 4.3 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base.

(a) How much mechanical energy is lost due to friction acting on the runner? J

(b) How far does he slide? m

Answer #1

. An 80 kg baseball player goes into his slide when he is
6.00meters from second base. He comes to rest just as he touches
the bag 1.50 seconds later
Assume that his acceleration is uniform.
a) Find this acceleration
b) Find his speed when he begins the slide
c) Find the magnitude of the frictional force acting on him
during his slide.
d) Find the work done by this frictional force

Starting from rest, a kid named Billy goes down a slide, which
is a height of 2.5 m above the ground. Billy’s mass is 35 kg. There
is friction acting on Billy, so that when he reaches the bottom of
the slide (at ground level), his speed is only 3.5 m/s. Consider
the total mechanical energy of the Earth + Billy system, which
consists of kinetic and potential energy. How much mechanical
energy was lost due to friction? Give your...

A baseball player with a mass of 81.6 Kg slides into second base
moving at 28.08 km/h. If the coefficient of kinetic friction
between the player and the ground is 0.8, how far does the player
slide before coming to rest?

A hockey puck (mass = 3.5 kg) leaves the players stick (moving
to the left) with a speed of 28 m/s and slides on the ice before
coming to rest.
The coefficient of friction between the puck and the ice is
0.9.
What is the normal force on the puck?
N
Tries 0/2
What is the friction force exerted on the puck due to the
ice?
N
Tries 0/2
What is the magnitude of the acceleration of the puck due...

During a rockslide, a 360 kg rock slides from rest down a
hillside that is 500 m along the slope and 250 m high. The
coefficient of kinetic friction between the rock and the hill
surface is 0.30. (a) If the gravitational potential energy U of the
rock-Earth system is zero at the bottom of the hill, what is the
value of U just before the slide? (b) How much energy is
transferred to thermal energy during the slide? (c)...

A 4.25 kg block is projected at 5.40 m/s up a plane that is
inclined at 30.0° with the horizontal. The block slides some
distance up the incline, stops turns around and slides back down to
the bottom. When it reaches the bottom of the incline again, it is
traveling with a speed of 3.80 m/s. If the coefficient of kinetic
friction between the block and the plane is 0.500, how far up the
incline did the block slide?

A 4.08 kg box begins to slide from rest through a plane inclined
at 25.0 degrees (with respect to the horizontal) and which is 7.00
m long. The friction force between the box and the inclined plane
is 5.0 N. (explain each process and how you got to the answer)
Determine:
(a) the speed of the box when reaching the end of the inclined
plane (using what was learned in work / energy): Answer
(b) the coefficient of kinetic friction:...

A 4.25 kg block is projected at 5.40 m/s up a plane that is
inclined at 30.0° with the horizontal. The block slides some
distance up the incline, stops turns around and slides back down to
the bottom. When it reaches the bottom of the incline again, it is
traveling with a speed of 3.80 m/s. If the coefficient of kinetic
friction between the block and the plane is 0.500, how far up the
incline did the block slide? Please...

An object (m = 2.08 Kg) moving on a horizontal surface reaches
the bottom of an incline with a speed of 4.18 m/s. The incline
makes an angle of 37.0 degrees with respect to the horizontal. The
coefficient of kinetic friction between the box and the inclined
surface is 0.300. How far up the inline will the object move before
coming to stop?

Superhero Fledermausman (mass = 80 kg) stands on a ledge 5m
above the floor. He swings down on a rope intending to
hit his arch enemy, Der Spassmacher (mass = 70 kg) at the very
bottom of his swing. An instant before the collision,
Fledermausman releases the rope. Now caught in a double
death grip, the two slide across the rough floor. a) What is
Fledermausman’s speed just before hitting Der Spassmacher? b) What
is the speed of the duo just after the...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 33 minutes ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago