A 900-kg car traveling 30.0° south of east at 12.0 m/s suddenly collides with a 750-kg car traveling north at 17.0 m/s. The cars stick together after colliding. What is the speed of the wreckage just after the collision?
A) 7.21 m/s
B) 12.2 m/s
C) 20.4 m/s
D) 25.0 m/s
E) 17.3 m/s
A
You might also like to view...
The accelerations possible for a ball on an inclined plane
A) range from zero to g. B) range from g to infinity. C) have no limit.
What is the audible range of sound frequencies?
What will be an ideal response?
At 22.0°C an aluminum ring has an inner diameter of 7.000 cm, and a brass rod has a diameter of 7.090 cm. Keeping the brass rod at 22.0°C, which of the following temperatures of the ring will allow the ring to just slip over the brass rod? (?Al = 2.4 × 10^?5 /C°, ?brass = 1.9 × 10^?5/C°)
a. 536°C b. 418°C c. 190°C d. 558°C e. 725°C
Two radio antennas are 120 m apart on a north-south line, and they radiate in phase at a frequency of 3.4 MHz
All radio measurements are made far from the antennas. If the east-west reference line passes midway between the two antennas, what is the smallest angle from the antennas, measured north of east, at which constructive interference of two radio waves occurs? (c = 3.00 × 108 m/s) A) 30° B) 47° C) 43° D) 68° E) 22°