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Mechanics
Page 10
Questions (40,033)
The maker of an automobile advertises that it takes 13 seconds to accelerate from 25 kilometers per hour to 90 kilometers per
6 answers
asked by
Kelly
5,533 views
A 10-kg box is pulled along a horizontal surface by a
force of 40N applied at a 30° angle above horizontal. The coefficient of
5 answers
asked by
denise
9,519 views
A 16kg sled starts up a 28 degree incline with a speed of 2.4 m/s . The coefficient of kinetic friction is = 0.27.
part a)How far
6 answers
asked by
leeann
7,950 views
An airplane has an airspeed of 450 km/hr bearing N45E. The wind velocity is 30 km/hr in the direction N30W. What is the ground
4 answers
asked by
VEJ
4,205 views
A bouncy ball bounces to 2/3 of its height when dropped on a hard surface. Suppose the ball is dropped from 20 m.
What is the
5 answers
asked by
Sam
3,994 views
You are unable to lift an object. which property makes the object difficult to lift
A mass b density c volume d weight
22 answers
asked by
Alexis
9,935 views
You drive down the road at 39 m/s (88 mi/h) in a car whose tires have a radius of 34 cm.
What is the period of rotation of the
6 answers
asked by
anonymous
6,054 views
You are in an egg drop contest which you win by breaking your egg the hardest. You drop your egg off of a 3 story building (12m
4 answers
asked by
satvik
182 views
Projectile motion problem. The maximum range for a projectile is achieved when the projectile is fired at 45 degrees. This is
3 answers
asked by
Alex
722 views
A tennis ball traveling at 25 m/s has a mass of 58.5 g and bounces off a wall with a speed of 22.5 m/s. The impact took 3.33 ms.
4 answers
asked by
Anonymous
2,024 views
A uniform disc of moment of inertia 75 kg * m ^ 2 and radius of gyration 3 rates with an angula velocity of 2 rad s', Determine
5 answers
asked by
Jennifer uchechukwu
851 views
Two forces 8N and 10N acts at 40 degrees to each other find the resultant force using the resolution of vector
10 answers
asked by
Dora
217 views
A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 1.0 J
5 answers
asked by
Dan
6,013 views
a uniform bridge span weighs 50x10^3 and is 40m long. A car weighing 15X10^3 is parked with its center of gravity located 12m
5 answers
asked by
natali
6,254 views
The path of water sprayed from a fountain is modeled by h=−4.9t2+58.8t,
where h is the height of the water in meters after t
3 answers
asked by
Ahmad
127 views
1. Find the magnitude of the torque produced by a 3.0 N force applied to a door at a perpendicular distance of 0.25 m from the
5 answers
asked by
Anonymous
9,465 views
A 55 kg ice skater is at rest on a flat skating rink. A 198 N horizontal forceis needed to set the skater in motion.However,
7 answers
asked by
Melissa
10,466 views
A person using a lever applies 98 Newtons to lift a 20-kilogram box. They apply the force over a distance of 4 meters to lift
1 answer
asked by
kriox
224 views
As denizens of the surface of a spinning planet, we are always in uniform circular motion. Imagine you are in Nairobi (on the
5 answers
asked by
anonymous
1,847 views
suppose you drop a tennis ball from a height of 15 feet. After the ball hits the floor, it rebounds to 85% of its previous
9 answers
asked by
jerson
7,345 views
An arrow is horizontally projected from the top of a tower with an initial velocity of 15m/s.if it reaches the ground 7seconds
7 answers
asked by
Sylvester
2,229 views
A long jumper leaves the ground with an initial velocity of 12 m/s at an angleof 28°
above the horizontal. Determine the peak
3 answers
asked by
christian
445 views
A student drops a basketball into a pool from a height of 5 meters while her friend records the approximate splash height. They
39 answers
asked by
i need to know
21,863 views
Torque is not zero due action and reaction force true or false
5 answers
asked by
Sawai
1,820 views
A car starts from rest and moves with constant acceleration during the 5th second of its motion,it covers a distance of 36
7 answers
asked by
Mariam
7,069 views
The figure shown the chain drive of a bicycle. How far will the bicycle move if the pedals are rotated at 180°. Assume the
5 answers
asked by
paula
6,174 views
During a crash, a dummy with a mass of 60.0 kg hits an airbag that exerts a constant force on the dummy. The acceleration of the
7 answers
asked by
smxnsmn
7,379 views
4. A horse on a merry go round is 7 m from the center and travels at 10km/hr. What is its angular speed?
5 answers
asked by
anonymous
2,913 views
A car initially at rest travels for 2 minutes with a uniform acceleration of 0.3 m/s^2,after which the speed is kept constant
5 answers
asked by
Bernard
1,085 views
A boy of Mass 20kg stands on a building floor 12m above the ground level. Calculate his potential energy.
7 answers
asked by
Lawal
883 views
A 450-g block is attached to a spring of spring constant 45 N/m and is in simple harmonic motion on a frictionless surface with
5 answers
asked by
Lucy
1,822 views
A uniform have metre rule,pivoted at 20cm mark balances horizontally when a mass of 50g is suspended from 4cm mark calculate the
10 answers
asked by
Francis
5,822 views
A ball is dropped from $405$ meters and rebounds two-thirds the distance it falls each time it bounces. How many meters will the
5 answers
asked by
Brendan Zankowski
2,114 views
A round bar 40mm diameter is subjected to an axial pull of 80kN and
reduction in diameter was found to be 0.00775mm. Find
5 answers
asked by
aswath
3,064 views
A ball bounces two-thirds of the distance it falls. If it is dropped from a height of 10 meters, how far does it move before
5 answers
asked by
ALI
2,495 views
David can row at 5 m/s in still water. He starts rowing from a point on the south bank of a river that is flowing due east at 3
4 answers
asked by
LE
1,133 views
Col. John Stapp led the U.S. Air Force Aero Medical Laboratory's research into the effects of higher accelerations. On Stapp's
4 answers
asked by
Sydney
3,103 views
A car is travelling along a straight road. The driver suddenly observes that the road ahead is flooded and applies the brakes.
De
4 answers
asked by
Mathew
3,074 views
Solve a man of mass of 90kg is moving at a constant velocity. He has kinetic energy of 2205J. Calculate his velocity.
12 answers
asked by
Favour
2,174 views
A uniform rod AB is 2m Long. The rod, which exerts a downward force of 60N at its center, is placed on a knife edge support
4 answers
asked by
Isaac
935 views
A bicycle wheel has a radius of 0.330 m and a rim whose mass is 1.20 kg. The wheel has 50 spokes, each with a mass of 0.010 kg.
a
4 answers
asked by
Janelle
2,427 views
the general "hang time" of a punt is measured to be 4.5sec. if the ball was kicked @ an angle of 63deg. above the horizontal &
4 answers
asked by
Lisa
2,942 views
A balloon is rising with a velocity of 4.9 m/sec releases an object from height of 96 m. a) How long after its release will the
4 answers
asked by
Margie
1,852 views
Where is the fulcrum in this situation?
(guy lifting a rock with a bar) It is the point where the bar touches the smaller rock.
4 answers
asked by
Subzero
754 views
A car and an attached trailer have a combined mass of 3,000 kg. The car and trailer are moving on the highway at a velocity of
4 answers
asked by
Faoruk
2,026 views
A 1000N crate is being pushed across a level floor at a constant speed by a force F of 300N at an angle of 20.0 degrees. (a)
5 answers
asked by
DROSP
29,044 views
A simple lever is used to lift a heavy load. When a 60-N force pushes one end of the lever down 1.2 m, the load rises 0.2 m.
7 answers
asked by
Peg
11,413 views
A major leaguer hits a baseball so that it leaves the bat at a speed of 30.0 m/s and at an angle of 36.9° above the horizontal.
5 answers
asked by
Anonymous
7,858 views
An 8.00kg package in a mail-sorting room slides 2.00 m down a chute that is inclined at 53.0 degrees below the horizontal. The
5 answers
asked by
Amisha
11,134 views
A spring is hung from a ceiling, and an object attached to its lower end stretches the spring by a distance d = 7.70 cm from its
4 answers
asked by
Ame
7,528 views
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