A particle leaves the origin with an initial velocity of 4.10
m/s in the x direction, and moves with constant acceleration ax =
-1.40 m/s2 and ay = 3.80 m/s2. How far does the particle move in
the x direction before turning around? What is the particle's
velocity at this time? Enter the x component first, followed by the
y component.
A particle moves along a straight line with an acceleration
a=2v1/2m/s2, where v is in m/s.
If s = 0, v = 1 m/s when t = 0,
determine the time for the particle to achieve a velocity of 18
m/s. Also, find the displacement of particle when t = 1 s.
Express your answer using three significant figures and
include the appropriate units.
A particle undergoes a constant acceleration of 4.00 m/s2. After
a certain amount of time, its velocity is 12.2 m/s. (Where
applicable, indicate the direction with the sign of your answer.)
(a) If its initial velocity is 6.1 m/s, what is its displacement
during this time? m (b) What distance does it travel during this
time? m (c) If its initial velocity is −6.1 m/s, what is its
displacement during this time? m (d) What is the total distance the...
Particle A of mass m, initial velocity 20i (m/s) has a collision
with a stationary particle B of mass 2m. After collision,
VA(final)=10i+5j (m/s). a) Find VB(final) if the system (particle A
plus B) linear momentum is conserved (both i and j directions).
What are the velocities of center of the system before and after
collision?b) Find the system’s % KE lost due to the collision
(m=20.0gram). c) If the collision time between A and B is 0.050 s,
what...
A particle of mass 1.30 kg is moving with velocity v⃗
=(7.4i^+5.6j^)m/s.
1) Find the angular momentum L⃗ relative to the origin when the
particle is at r⃗ =(2.9j^+4.3k^)m. Enter your answers in indicated
order separated by commas. Express your answer using two
significant figures.
Lx,Ly,Lz =
2) At position r⃗ a force of F⃗ =5.0Ni^ is applied to the
particle. Find the torque relative to the origin. Enter your
answers in indicated order separated by commas. Express your answer...
A particle moves with acceleration function a(t) = 2x+3. Its
initial velocity is v(0) = 2 m/s and its initial displacement is
s(0) = 5 m. Find its position after t seconds.
A car initially traveling at 34.2 m/s undergoes a constant
negative acceleration of magnitude 1.90 m/s2 after its brakes are
applied.
(a) How many revolutions does each tire make before the car
comes to a stop, assuming the car does not skid and the tires have
radii of 0.310 m?
(b) What is the angular speed of the wheels when the car has
traveled half the total distance?
a)A car initially traveling at 31.7 m/s undergoes a constant
negative acceleration of magnitude 1.60 m/s2 after its
brakes are applied.
-How many revolutions does each tire make before the car comes
to a stop, assuming the car does not skid and the tires have radii
of 0.310 m? ______ rev
-What is the angular speed of the wheels when the car has
traveled half the total distance? _______ rad/s
b) A 50.0-kg child stands at the rim of a...
A car initially traveling at 25.7 m/s undergoes a constant
negative acceleration of magnitude 1.80 m/s2 after its
brakes are applied.
(a.) How many revolutions does each tire make before the car
comes to a stop, assuming the car does not skid and the tires have
radii of 0.340 m? (rev)
(b.) What is the angular speed of the wheels when the car has
traveled half the total distance? (rad/s)
Particle A (mA = 1 kg) is given initial velocity 10 m/s to the
right, while particle B (mB = 1:5 kg) is initially at rest. The
coecient of restitution for any impact between A and B is 2/3 while
the coecient of restitution for impact of either particle with
either wall is 5/6. The particles slide along a smooth horizontal
supporting surface. Compute the percentage of the kinetic energy
remaining in the system of A and B at the...