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Kinematics
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Questions (15,709)
The displacement of a particle with a mass of 225 g depends on time and is described by the function x(t) = -3.0t3 + 2.0t2 +
3 answers
asked by
Deadrea
121 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
1,084 views
A brick with a mass of 6kg is dropped vertically from a certain height.it takes 4,5 seconds for the brick to reach the
4 answers
asked by
Peter
1,045 views
an airplane travels 500 km with the wind in the same time that it takes the airplane to travel 400 km against the wind. the
6 answers
asked by
Sarah
3,003 views
if the initial velocity of an object is 12m/s, determine the horizontal distance it can cover without rising more than 3m.θ=40
4 answers
asked by
jj
1,862 views
Victor left his house riding his bike at a speed of 18 km/hr. When Victor was 1/2 km from his house, his brother Alex left the
5 answers
asked by
Alex Shi
2,235 views
A vehicle is travelling 1.0x10^2 km/h. what is the spped of the vehicle in metres per second?
28m/s 27.8m/s 3.6x10^2m/s
4 answers
asked by
Emmanuel
3,719 views
You drop the rubber ball from height h it bounces back to 60% of its original height. Write an equation you can use to find the
9 answers
asked by
Need Help
4,085 views
A boat heads 15 degrees west of north with a water speed of 3 m/s. Determine its velocity relative to the ground when there is a
6 answers
asked by
Luke
3,048 views
Matt is walking at 1.25 miles per hour to the east. Jaime is walking at 1.25 miles per hour to the south. Which statement
6 answers
asked by
need help
1,725 views
An aircraft flies from a town P to another town Q 85km north of P. The aircraft then flies Eastward to another town T which is
5 answers
asked by
Ayuba
526 views
How much work must be done to stop a 1250 kg car traveling at 105 km/h?
10 answers
asked by
Emily Grossman
13,787 views
A bike first accelerates from 0.0 m/s to 5.0 m/s in 4.5 s, then continues at this constant speed for another 4.5 s. What is the
10 answers
asked by
lindsey
16,505 views
As a baseball is being caught, it's speed goes from 30.0m/s to 0m/s in about 0.0050s. The mass of the baseball is 0.145kg
A) what
5 answers
asked by
Sandara
3,809 views
A turtle is moving with a constant acceleration along a straight ditch. He starts his stopwatch as he passes a fence post and
5 answers
asked by
BT
4,234 views
A car, in overtaking trailer, uniformly accelerated its speed from 40 kph to 90 kph in 8 seconds. Calculate the distance
4 answers
asked by
Unknown
4,323 views
the speed boat has a acceleration of 2.0 m/s2 if the initial velocity of the boat is 6.0 m/s2. find the boat displacement after
5 answers
asked by
junrex
1,074 views
A stone is projected vertically upwards with a velocity of 20m/s. 2s later another stone is similarly projecte?
with the same
7 answers
asked by
Covenant
6,781 views
On a frozen pond, a 13.9 kg sled is given a kick that imparts to it an initial speed of v0 = 1.81 m/s. The coefficient of
5 answers
asked by
taylor
3,868 views
6) Mythreyan, a baseball player leads off the game and hits a long home run. The ball leaves the bat at an angle of 70.0o from
5 answers
asked by
Opeyemi Lawal
1,644 views
a particle moves along the y axis so that its position at any time t, for 0 is less than or equal to t which is less than or
4 answers
asked by
kriti
5,893 views
a bomb is dropped from an airplane travelling horizontally with a speed of 300 mi/hr if the airplane is 10000ft. above the
6 answers
asked by
Andrea
3,873 views
A rock dropped from the top of a building takes 0.55 s to fall the last 50% of the distance from the top to the ground.How tall
6 answers
asked by
Anonymous
2,839 views
A body falls freely from rest for a 6sec find the distance traveled in the last 6sec.
4 answers
asked by
Dave Ang
1,571 views
A stone of mass 20g is release from a catapult whose rubber has been stretched through 4cm, if the force constant of the rubber
12 answers
asked by
Justice
5,561 views
A cart rolls down a 2.5 m frictionless ramp in 1.25s after starting from rest at the top. What is the angle of the ramp?
4 answers
asked by
Carmen
603 views
A ball with mass 0.8kg is thrown southward into the air with a speed of 30m/s at an angle of 30 to the ground. A west wind
4 answers
asked by
#1
1,269 views
two uniform cylinders have different masses and different rotational inertias.they simultaneously start from rest at top of an
4 answers
asked by
owen
4,155 views
A golf ball is given an initial speed of 20 m/s and returns to ground level. Which launch angle above level ground results in
4 answers
asked by
Julie
3,642 views
You throw a ball into the air with an initial vertical velocity of 31 feet per second. The ball leaves your hand when it is 6
4 answers
asked by
Anonymous
1,506 views
a ping pall ball is dropped from 20m on a horizontal roof of a house and always reduce to 1/8of previous fall in each bounce
4 answers
asked by
jeshion
837 views
a 2100 kg car starts from rest and accelerates at a rate of 2.6 m/s for 4 sec. assume that the force acting to accelerate the
4 answers
asked by
david
1,960 views
A plane is flying west at 500 ft/sec at an altitude of 4000 ft. The plane is tracked by a searchlight on the ground. If the
4 answers
asked by
bill
2,967 views
A car is speeding at 25 m/s in a school zone. A police car starts from rest just as the speeder passes and accelerates at a
4 answers
asked by
TiffTaff
1,807 views
A body of mass 15kg is placed on a smooth plane which is inclined at 60° to the horizontal. Find:
a)the acceleration of the body
4 answers
asked by
Megan
1,425 views
A particle moves on a straight line. The velocity after t seconds is given by V= 3t^2 – 6t – 8.
The distance of the particle
3 answers
asked by
kudu
2,473 views
A bullet of mass 15g is short from a gun 15kg with a muzzle velocity of 200m/s if the bullet is 20cm calculate;(a)the
3 answers
asked by
mike
309 views
Two postal delivery workers have different routes. They both travel from the post office, to neighborhoods to deliver mail, and
3 answers
asked anonymously
267 views
A solid disk is released from rest and rolls without slipping down an inclined plane that makes an angle of 25.0° with the
2 answers
asked by
Sam
949 views
i need help with this one
thanks A particle starts from rest and is acted on by a net force that does work at a rate that is
7 answers
asked by
Damon
5,873 views
during the takeoff roll, a boeing 747 jumbo jet is accelarating at 4m\s. it requires 40 s to reach takeoff speed. what is the
4 answers
asked by
sam
2,023 views
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
9,518 views
In coming to a stop a car leaves skid marks 92m long on the highway. Assuming a decceleration of 7.00m/s^2, estimate the speed
4 answers
asked by
john
13,916 views
A traffic-safety engineer is designing a deceleration lane.
She is basing the length of this lane on the distance needed to slow
4 answers
asked by
Emmanuel
3,179 views
An object is thrown directly downwards from a height of 60m with an initial velocity of 11m/s. What will be its velocity on
4 answers
asked by
Danny
2,699 views
A block starts at rest and slides down a frictionless track except for a small rough area on a horizontal section of the
5 answers
asked by
Becky
9,508 views
A player kicks a football with an initial velocity of 3.00 m/s at an angle of 60.0 above the horizontal. What is the horizontal
4 answers
asked by
Jon
4,674 views
The acceleration of a particle is defined by equation, a = - 8m/s2 .
Knowing that x = 20m where t = 4s and that x = 4m where v =
4 answers
asked by
EBENEZER
1,145 views
A clerk pushes a filing cabinet of mass 22.0 kg accross the floor by exerting a horizontal force of magnitude 98 N. The
4 answers
asked by
Raj
2,259 views
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