A 5.80 x 103 kg delivery truck moving with a velocity of 20 m/s
hits a 1.50 x103 kg parked car. As a result of the impact, the car
was set in motion at 31.8 m/s. (Assume the car –truck to be an
isolated system) (a) Sketch the situation. (b) Find the velocity of
the truck immediately after the collision; (c) Find the kinetic
energy of the car-truck system before and after the collision. (d)
Is the car-truck collision elastic...
A 7.2 kg block with a speed of 10 m/s collides with a 19 kg
block that has a speed of 5.4 m/s in the same direction. After the
collision, the 19 kg block is observed to be traveling in the
original direction with a speed of 5.4 m/s. (a)
What is the velocity of the 7.2 kg block immediately after the
collision?(b) By how much does the total kinetic
energy of the system of two blocks change because of...
A 15.0 kg object moving in the +x direction at 5.5 m/s collides
head-on with a 11.5 kg object moving in the −x direction at 4.0 m/s
.
Part A-
Find the final velocity of each mass if the objects stick
together.
Express your answers using two significant figures. Enter your
answers numerically separated by a comma.
Part B-
Find the final velocity of each mass if the collision is
elastic.
Express your answers using two significant figures. Enter your...
A small object with mass m, charge q, and initial speed v0 =
6.00×103 m/s is projected into a uniform electric field
between two parallel metal plates of length 26.0 cm (Figure 1). The
electric field between the plates is directed downward and has
magnitude E = 700 N/C . Assume that the field is zero outside the
region between the plates. The separation between the plates is
large enough for the object to pass between the plates without
hitting...
A 1,4-kg object traveling at 5,5 m/s collides head-on with a
3-kg object traveling in the opposite direction at 3,9 m/s. If the
collision is perfectly elastic, what is the final speed of the
1,4-kg object? Answer in two decimal places. The answer is supposed
to be 7,32. Why is that?
A 0.00410–kg bullet traveling horizontally with a speed of 1.00
✕ 103 m/s enters a 21.0–kg door, embedding itself 19.0
cm from the side opposite the hinges as in the figure below. The
1.00–m–wide door is free to swing on its hinges.
(a) Before it hits the door, does the bullet have angular
momentum relative to the door's axis of rotation?
Yes or No
Explain.
(b) Is mechanical energy conserved in this collision? Answer
without doing a calculation.
Yes or...
A(n) 8.5-kg object is sliding across the ice at 2.34 m/s in the
positive x direction. An internal explosion occurs, splitting the
object into two equal chunks and adding 11 J of kinetic energy to
system. The explosive separation takes place over a 0.16-s time
interval. Assume that the one of the chunks after explosion moves
in the positive x direction. The x component of the average
acceleration of this chunk during the explosion is afrontx, the x
component fo...
A(n) 7.8-kg object is sliding across the ice at2.34 m/s in the
positive x direction. An internal explosion occurs,
splitting the object into two equal chunks and adding 12 J of
kinetic energy to system. The explosive separation takes place over
a 0.16-s time interval. Assume that the one of the chunks after
explosion moves in the positive xdirection. The x
component of the average acceleration of this chunk during the
explosion is afrontx, the x component fo
the average...
Data Table A
Mass of Cart (kg)
Impulse (N.s)
Velocity (m/s)
Momentum (N.s)
Change in Momentum
%
Diff.
Before
After
Before
After
0.2695
+0.351
- 0.673
+0.659
Data Table B
Mass of Cart + mass bar (kg)
Impulse (N.s)
Velocity (m/s)
Momentum (N.s)
Change in Momentum
% Diff.
Before
After
Before
After
0.4695
+0.346
-0.377
+0.372
% Difference= 2×(Change in
momentum-Impulse)(Change in
momentum+Impulse)×100=
Questions
What are possible reasons why the change in momentum is
different from the measured impulse?...
a 1.0 x 103 kg toyota collides into the rear end of a
2.2 x 103 kg cadillac stopped as a red light. The
bumpers lock, the brakes are locked, and the two cars skid forward
2.8 m before stopping. The police officer,knowing that the
coefficient of kinetic friction between the tires and the road was
.4 calculated the speed of the toyota at impact. What was that
speed? Please show the steps that got you to the answer as...