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Kinematics
Page 4
Questions (15,708)
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
a tennis ball is thrown straight up with an initial velocity of 22.5 m/s. it is caught at the same distance above the ground.
a).
6 answers
asked by
confused
17,543 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
125 views
If a ball is thrown directly upward with a velocity of 80ft/s, its height (in feet) after t seconds is given by y=80t-16t^2.
6 answers
asked by
lucy
4,340 views
When sky divers initially fall from an airplane their velocity v in miles per hour after free falling d feet can be approximated
5 answers
asked by
Chiquita
2,434 views
A bird drops a stick to the ground from a height of 68ft. The function h=-16t^2+68 gives the stick's approximate height h above
5 answers
asked by
Gray
1,151 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
the position of a body at time t sec is s=t^3 - 6t^2 + 9t m. Find the body's acceleration each time the velocity is zero.
4 answers
asked by
sammi
4,351 views
An object is projected vertically upward from the top of a building with an initial velocity of 144 ft/sec. Its distance s(t) in
4 answers
asked by
Mack
2,380 views
The height of an object moving up and down is described by y=72+40cos18t (in degree mode). To at least three decimal places,
4 answers
asked by
maath
1,867 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
3,073 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
2,172 views
1.Two stones are dropped from the top of a tower at an interval of 3 seconds.the relative velocity of the first Stone with
4 answers
asked by
Nasrin
828 views
A rock is thrown straigh down from a height of 480 feet with an initial velocity of 16 feet per second. How long does it take to
4 answers
asked by
Jessica
2,319 views
A ball is dropped from a height of 60.0 m. A second ball is thrown from the height 0.850 s later. If both balls reach the ground
5 answers
asked by
Ella
2,575 views
A stone is thrown up from the top of a platform with an initial velocity of 19.8m/s. If the top of the platform is taken to be
4 answers
asked by
Blackagar
756 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
1,850 views
a firecracker is fired from the ground. The height of the firecracker at a given time is modeled by the function h(t)
4 answers
asked by
Rutba
2,953 views
A rocket is launch from the top of an 40 foot cliff with an initial velocity of 140 feet per second, the height h of the rocket
4 answers
asked by
Wes
1,998 views
A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. What is its acceleration?
A. 0.21
5 answers
asked by
Mark
15,820 views
A woman on a bridge 75.0m high sees a raft floating at a constant speed on the river below. She drops a stone from rest in an
4 answers
asked by
Bob
9,844 views
1.A bus travels 400 m between two stops. It starts from rest and accelerates at 1.50 m/s^2 until it reaches a velocity of 9.00
4 answers
asked by
Anonymous
8,000 views
A grasshopper leaps into the air from the edge of a cliff at a 50 degree angle. He reaches a maximum height 6.74 cm above the
7 answers
asked by
Sarah
19,816 views
Find the velocity and position vectors of a particle that has the given acceleration and the given initial velocity and
4 answers
asked by
Anon
4,382 views
A 0.50 kilogram ball is thrown vertically upward with an initial kinetic energy of 25 joules. Approximately how high will the
5 answers
asked by
lucy
11,945 views
You ride your bike along a straight line from your house to a store 1030 m away. On your way back, you stop at a friend's house
4 answers
asked by
MARÝA
3,641 views
A bus travels 80 km due south in 2 hours it then travels 100 km due west in 3 hours what is the average velocity of the bus
5 answers
asked by
Nati
1,578 views
A particle of mass m, initially at rest at x = 0, is accelerated by a force that increases in time as F=Ct^2.
a) Determine its
4 answers
asked by
E
4,488 views
A ball is dropped from a height of 10 feet and bounces. Each bounce is ¨ú of the height of the bounce before. Thus, after the
6 answers
asked by
Sandy
7,762 views
A truck driver slams on the brakes and skids to a stop through a displacement of delta x.
(a) IF the truck has twice the mass, by
4 answers
asked by
John
6,122 views
A street light is mounted at the top of a 6 meter tall pole. A man 2m tall walks away from the top with a speed of 1.5 m/s along
5 answers
asked by
Erich
2,964 views
the speed of a cyclist reduces uniformly from 2.5 m/s to 1.0 m/s in 12 s.
(a) calculate the deceleration of the cyclist. (b)
5 answers
asked by
valerie
3,804 views
A student throws two beanbags in the air, one straight
up and the other one at a 30° angle from the vertical. Both beanbags are
4 answers
asked by
ella
3,176 views
A bus moves from rest with a uniform acceleration of 2m/s(square) for the first 10s. It then accelerate at a uniform rate of
7 answers
asked by
Uloma
2,210 views
A rock is thrown upward with a velocity of 15 meters per second from the top of a 49 meter high cliff, and it misses the cliff
5 answers
asked by
pam
2,547 views
A girls walks 12m northwards 5m eastwards and 7m southwards her total displacement is?
5 answers
asked by
Gift
2,368 views
help.
A rescue helicopter drops a package of emergency ration to a stranded party on the ground. If the helicopter is traveling
6 answers
asked by
Shahab Mirza
8,502 views
An electron is accelerated from rest to a velocity of 2.0x10^7 m/s.
a) if the electron travelled 0.10m while it was being
5 answers
asked by
Leo
3,889 views
The motor for an elevator can produce 2200 W of power. The elevator has a mass of 1100 kg complete with contents . At what
5 answers
asked by
Melissa
3,098 views
If you throw a ball straight up at 10 m/s and release it 2m above the ground:
a) What height will the ball reach V^2=u^2+2as
4 answers
asked by
Lisa
1,871 views
A ball is hit from horizontal ground with velocity (10i+24.5j) ms-1 where the unit vectors i and j are horizontal and vertically
5 answers
asked by
0oooooooo0
2,124 views
On the way to class, you walk north and then west such that your resultant displacement is 290 m in a direction 25deg west of
4 answers
asked by
Jade
1,301 views
a ball is released from rest and rolls down in an inclined plane, requiring 4 sec. to cover a certain distance of 100m. a) what
6 answers
asked by
Andrea
3,807 views
A body accelerate uniformly from rest at 2ms-2 .calculate it,s velocity after travelling 9m
7 answers
asked by
DAVID
3,004 views
a bridge is 10 m. above a canal. A motorboat going 3 m/sec passes under the center of the bridge at the same instant that a
4 answers
asked by
Anonymous
1,934 views
How far does a car going 25 m/s travel in 5s ? How far would a jet going 250 m/s travel in 5s?
4 answers
asked by
mandy Schwarzenegger
3,003 views
A bicycle tire has a stone stuck in it. The radius of the tire is 46cm. Every time the wheel turns, the stone hits the ground.
a.
7 answers
asked by
Bethany
2,970 views
The height, in meters, of a projectile can be modeled by h= -4.9t^2 + vt + s where t is the time (in seconds) the object has
4 answers
asked by
Cooper
4,959 views
A clock has a minute hand that is 8 inches long, and an hour hand that is 6 inches long. How quickly is the distance between the
4 answers
asked by
Mike
1,092 views
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