Question

1. Does the momentum of an object give you more information than the velocity? Explain.

2. How could you determine the impulse during some time interval when the impulsive force varies during the interval?

Answer #1

1.What's the difference between velocity and speed?
A. Velocity has direction
B. Speed is measured in m/s
C. Speed is faster than velocity
D. There is no difference
2. Which of the following statements are true about impulse?
(Select all that apply)
A. Objects involved in collisions encounter impulses
B. The kg•m/s is equivalent to the units on impulse
C. Impulse is a force
D. The Newton is the unit for impulse
E. In a collision, the net impulse experienced...

1.The momentum of an object is not dependent on which one of
the following quantities?
a) acceleration b) inertia
c) mass
d) velocity
2.Which one of the following statements concerning the
momentum of a system when the net force acting on the system has a
positive value is true?
a) The momentum of the system is increasing.
b) The momentum of the system is decreasing.
c) The momentum of the system is equal to zero kg m/s. d)
The...

For the same force, why does a long cannon impart more speed to
a cannonball than a short cannon?
The kinetic energy of an object of mass 2 kg is 16 J. What is
its linear momentum?
A 70.0 kg archer, standing on frictionless ice, shoots an 80.0 g
arrow at a speed of 80 m/s. What is the recoil speed of the
archer?
Explain two ways by which you can increase the
impulse.

1. Is impulse the same as momentum or is it
different? Explain.
2. How are the units for
momentum compared to the units for
impulse?
3. There is a formula that describes the
relationship between impulse and momentum, what is
it? Write it down below and briefly explain what it
means.

(part 1) Give a physiologically sound explanation why
contraction velocity is faster than relaxation
velocity.
A. Ca2+ reuptake by the lateral sacs is active
and requires the use of pumps while Ca2+ release from the lateral
sacs is passive and does not require the use of pumps.
B. Ca2+ reuptake by the lateral sacs is passive
and requires the use of pumps while Ca2+ release from the lateral
sacs is active and does not require the use of pumps.
C....

1. For an object moving in uniform circular motion, does the
centripetal force do work on the object?
A.
Yes, because work is force times distance and the object is
moving from the force.
B.
No, because the force is always perpendicular to the object's
displacement.
C.
No, because the displacement of the object is zero.
D.
Yes, because the object is moving.
2. An object is moving along a straight line with a speed of v
when it hits...

Two objects are at rest on a frictionless surface. Object 1 has
a greater mass than object 2. When a force is applied to object 1,
it accelerates for a time interval ∆t. The force is removed from
object 1 and is applied to object 2. After object 2 has accelerated
for the same time interval ∆t, which statements are true?
(a) p1 < p2
(b) p1 = p2
(c) p1 > p2
(d) KE1 < KE2
(e) KE1 =...

1) A car with a mass of 2000 kg with an initial
velocity of 10 m/s crashes into a wall. The time variation (Delta
t) is 0.015 seconds. What is the change in momentum? What is the
car's impulse and force? What if the car crashes into a haystack
with a time variation (Delta t) of 0.15 seconds. What would then be
its change in momentum, impulse and force. How about its final
velocity?
2) A swing made of a...

Momentum and Impulse Physics
1. An astronaut is performing EVA (extra-vehicular activity–this is
NASA-speak for a space walk) near the International Space Station
(ISS) when her jet pack malfunctions. There are two objects within
her reach that she can use to propel herself back to the safety of
the ISS. Object A has her mass M, and object B has a mass of 10·M
(ten times greater). Which object should she push on to achieve a
given momentum towards the...

Object A has mass mA = 10 kg and initial
momentum A,i = < 20, -5, 0 > kg · m/s,
just before it strikes object B, which has mass
mB = 14 kg. Just before the collision object B
has initial momentum B,i = < 3, 5, 0 > kg
· m/s.
Consider a system consisting of both objects A and B. What is
the total initial momentum of this system, just before the
collision?
P sys,i =
The...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 23 minutes ago

asked 25 minutes ago

asked 31 minutes ago

asked 33 minutes ago

asked 35 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago