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Two cars are traveling on a desert road, as shown below. After 5.0 s, they are side by side at the next telephone pole. The distance between the poles is 70.0 m. Identify the following quantities
a.the displacement of car A after 5.0 s
b. the displacement of car B after 5.0 s
c. the average velocity of car A during 5.0 s
d. the average velocity of car B during 5.0 s

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Manoj Pandey
Manoj PandeyLv10
4 Apr 2021
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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

Two bumper cars at the county fair are sliding toward one another (Fig. P11.54). Initially, bumper car 1 is traveling to the east at 5.62 m/s, and bumper car 2 is traveling 60.0o south of west at 10.00 m/s. After they collide, bumper car 1 is observed to be traveling to the west with a speed of 3.14 m/s. Friction is negligible between the cars and the ground. 

(a) If the masses of bumper cars 1 and 2 are 596 kg and 625 kg respectively, what is the velocity of bumper car 2 immediately after the collision?

(b) What is the kinetic energy lost in the collision?

Just a few questions from a review packet i'm stuck on, anyhelpwould be appreciated!

1) The moment of inertia about its axis is given as .5 mr^2. Ifthiscylinder rolls without slipping the ratio of it's rotationalkineticenergy to it's translational kinetic energy is
a. 2:1
b. 1:1
c. 1:2
d. 1:3

2) An object’s angular momentum changes by 20 kg,m2/s in 4.0s. Whatmagnitude average torque acted on this object?
A. 2.5 N’m
B. 5.0 N-m
C. 40 N-m
D. 80 N’m

3) A solid cylinder of mass 10 kg is pivoted about africtionlessaxis thought the center O. A rope wrapped around theouter radiusR1 = 1.0 m, exerts a force F1 = 5.0 N to the right. Asecond ropewrapped around another section of radius R2 = 0.50 mexerts a forceF2 = 6.0 N downward. (See Fig. 8-1.) What is theangularacceleration of the cylinder?
A) 1.0 rad/s2
B) 0.60 rad/s2 >my guess<
C) 0.40 rad/s2
D) 0.80 rad/s2

4) A solid sphere of mass 1.0 kg and radius 0.010 m starts fromrestand rolls without slipping down a 1.0-m high inclined plane.What isthe speed of the sphere when it reaches the bottom of theinclinedplane?
A) 3.7 m/s >My guess<
B) 4.4 m/s
C) 5.6 m/s
D) 6.3 m/s

5)A railroad car with a mass of 200 kg is going at 10 m/s. A 70kgstunt man drops directly down on it from a distance of 4 mabove.What is the speed of the railroad car after?
a. 4.7 m/s
b. 7.4 m/s
c. 2.8 m/s
d. 10 m/s

6) A projectile is launched with an initial velocity of 60 m/s atanagnle of 30 degrees above the horizontal. How far will itgo?
a. 318 m
b. 160 m
c. 152 m
d. 184 m

When cars are equipped with flexible bumpers, they will bounce off each other during low-speed collisions, thus causing less damage. In one such accident, a 1850 kg car traveling to the right at 1.40 m/s collides with a 1350 kg car going to the left at 1.10 m/s. Measurements show that the heavier car's speed just after the collision was 0.250 m/s in its original direction. You can ignore any road friction during the collision.

A.) What is the speed of the lighter car just after collision?

B.)Calculate the change in the combined kinetic energy of the two-car system during this collision.

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