Question

A 1100 kg car moving at 5.2 m/s is initially traveling north in the positive y direction. After completing a 90° right-hand turn to the positive x direction in 3.9 s, the inattentive operator drives into a tree, which stops the car in 290 ms. What is the magnitude of the impulse on the car (a) due to the turn and (b) due to the collision? What is the magnitude of the average force that acts on the car (c) during the turn and (d) during the collision? (e) What is the angle between the average force in (c) and the positive x direction?

Answer #1

A 1200 kg car moving at 5.3 m/s is initially traveling north in
the positive y direction. After completing a 90°
right-hand turn to the positive x direction in 4.1 s, the
inattentive operator drives into a tree, which stops the car in 260
ms. What is the magnitude of the impulse on the car
(a) due to the turn and (b) due
to the collision? What is the magnitude of the average force that
acts on the car (c)...

A 1060 - kg car moving at 8.80 m/s is
initially traveling north along the positive direction of a y axis.
After completing a 90° right-hand turn to the positive x direction
in 4.00 s, the inattentive operator drives into a tree,
which stops the car in 430 ms.
In unit-vector notation, what is the impulse on the car during the
turn?
+
In unit-vector notation, what is the impulse on the car during
the collision?
+
What is the...

A car of mass m = 1100 kg, moving with a velocity of 22.0 m/s,
skidded off the road hitting a tree that brought the car to rest in
2.0 s. Determine
(a) the impulse J imparted to the tree.
(b) the average force that acted on the tree
during collision.

A 1000-kg car approaches an intersection traveling north at 20.0
m/s.
A car of equal mass approaches the same intersection traveling
east at 22.0 m/s.
The two cars collide at the intersection and lock together.
Ignoring any external forces that act on the cars during the
collision, what is the velocity ,aka, magnitude and direction, of
the cars immediately after collision?

A 2000-kg car approaches an intersection traveling north
(y-direction) at 12.0 m/s. A 2400-kg car approaches the same
intersection traveling east (x-direction) at 10.0 m/s. The two cars
collide at the intersection and lock together. Ignoring any
external forces that act on the cars during the collision, what is
the speed of the cars immediately after the collision? At what
angle (relative to the x-axis) do the cars travel immediately after
the collision?
At what angle from the x-axis does...

A 900-kg car traveling east at 15.0 m/s collides with a 750-kg
car traveling north at 20.0 m/s. The cars stick together. What is
the speed of the wreckage just after the collision? In what
direction does the wreckage move just after the collision?

A 1800-kg car approaches an intersection traveling north at 20.0
m/s. A 1600-kg car approaches the same intersection traveling east
at 10.0 m/s. The two cars collide at the intersection and lock
together. Ignoring any external forces that act on the cars during
the collision, what is the velocity of the cars immediately after
the collision?

A car (mass = 2581 kg) is moving directly north at 4.88 m/s when
it experiences an impulse of 10,001 (kg*m)/s at 34.7° East of
North. What is the car’s final velocity vector? Give the vector in
terms of magnitude and direction.

A BMW of mass 2000 kg is traveling at 42 m/s. It approaches a
1000 kg Volkswagen going 25 m/s in the same direction and strikes
it in the rear. Neither driver applies the brakes. Ignore the
relatively small force on the cars due to the road and due to air
resistance. (a) If the collision slows the BMW down to 33 m/s, what
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collision, which car exerts...

A 940 kg car traveling east at 12.3 m/s collides with a 670 kg
car traveling north at 20.3 m/s . The cars stick together. Assume
that any other unbalanced forces are negligible.
A) In what direction does the wreckage move just after the
collision?
B) What is the speed of the wreckage just after the
collision?

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